Solving Quadratic Inequalities: The Easy Way! Grade 9 Math by Teacher Gon

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Solving Quadratic Inequalities: The Easy Way! Grade 9 Math by Teacher Gon
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28 сен 2023

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Комментарии : 129

@jin_cotl 3 месяца назад

14:20 x² + 7x + 10 ≤ 0 -> set the equation equal to zero so you can find x, although it isn’t necessary as I’ve seen other teachers leave it unchanged. x² + 7x + 10 = 0 -> (x+2) (x+5) = 0 -> x+2=0, x+5=0 -> x = -2, x = -5 Critical points: x = -2, x = -5 Draw a number line. Select a random number to the left of -5, a number between -5 and -2, and a number to the right of -2. I selected numbers closest to -5 and -2. Starting from the left, each section of the number line, around or between -5 and -2, will be false, true, false. Interval notation: [-5, -2] (by looking from left to the right of the number line) Inequality: x ≥ -5 OR x ≤ -2 (if the line goes left, x is ≤ smaller than or equal to, if line goes to the right, x is ≥ greater than or equal to) I prefer to write the inequality after graphing on the number line. So, the answer should be somewhere between -5 and -2 lol I could be a good tutor, I just learned this today :0

@whiskapedia4254 2 месяца назад

teach me ay

@StudyTest-l8c Месяц назад

WRONG ANSWER Some parts you said were correct but I will point out the mistakes you made in your solution and conclusion, 1. " x ≥ -5 OR x ≤ -2 " Using the word "or" will contradict everything you just said, by saying that you are saying either one is correct or either one is wrong, use "and" so the final statement is: x ≥ -5 AND x ≤ -2 or we can write it into one -2 ≥ x ≥ -5 2. You said: " the answer should be somewhere between negative 5 and negative two " . There you go again, ending the paragraph by contradicting everything you just typed and solved. We don't use "somewhere in between". Are we using greater than or lesser than signs? To make it worse, you said "answer", yet in inequalities, there are endless amounts of answers No, we should say the answers are -5, -2, and the numbers between them. If you answer like this arrogant person, you will end up getting mistakes on exams and tests. Please don't be a tutor, you will fail students grades.

@whiskapedia4254 Месяц назад

@@StudyTest-l8c yappington but ok

@Jillissooo 29 дней назад

@whiskapedia4254 it ain't yapping if he helping

@whiskapedia4254 28 дней назад

@@Jillissooo sigma

@jin_cotl 3 месяца назад

13:23 another video from Organic chemistry tutor said to use [-5,2], because they’re fixed points. You only use () if there’s an infinity included, like (-∞, 5] if someone could explain that’d be great. Okay so now I understand after I did some research; you always write ( ) with infinities, but if an inequality has a ≥ (greater than or equal to) or ≤ (less than or equal to), the number is included on the number line, which ● a filled circle is marked above the number on the number line, so we use [ ] around that number in the interval notation. If the equation only has < or >, the number isn’t included on the number line, which ○ is drawn above the number, we use ( ) around the number in interval notation. If there’s a variety of ≥, ≤, in an inequality equation, we use ( ) and [ ] depending on which number is behind each sign.

@yyylenaa 3 месяца назад

i was wondering too! how to use the symbols. So this comment helped me, tysm.

@nadinedeluna1938 2 месяца назад

love ko dati math, kaso nung grade 10 (2016) ako di na pumasok kahit kailan math teacher ko kaya super struggle nung shs tapos stem pa strand ko lol. now after six years, im re-learning math ulit kasi gusto ko kumuha ng physics degree this year. thank you sa vid na to!!!

@weekomax 11 месяцев назад

Grade 9-Acts (Crack) from Misamis Oriental General Comprehensive High School (MOGCHS)

@MathTeacherGon 11 месяцев назад

Keep on learning here.

@senseiroster9769 Месяц назад

Your videos are very helpful for my grandchildren. I tutor them (junior high and senior high) so these videos serve also as my review so i can tutor them.

@StormRamirez669 11 месяцев назад

Me in School: *Doesn't understand anything* Me watching Teacher Gon: *Understands everything*

@steve_l6571 5 месяцев назад

Me too mate, I have exams in 1 month and 1.5 weeks and I need to study in order to go to 10th grade

@yusufcabrena7222 21 день назад

Me in modules or books: doesn't understand anything Me with teacher and watching tutorial I can understand

@ShadowRanz 13 дней назад

true

@KhatelenAngelaCampillo-pp7um 13 дней назад

Section 1 grade 9-Amethyst in LORENZO C. TANZA(MNHS)in camotes cebu

@nociaku5192 21 день назад

Grade 9 - Temperance (Arandia College Inc.) Parañaque Cty.

@sasunaru_official8073 Год назад

Section 1 po grade 9-Diamond in VICTORIAS NATIONAL HIGH SCHOOL(VNHS) in negross occidental

@LiyahLavigne 11 месяцев назад

Halah diamond rin name ng section mo haha

@FaithMarinelMerced Месяц назад

GRADE 8 DIAMOND HERE

@marpacia952 Месяц назад

Grade 9 King's spear from DCBES mnhs Nasugbu Batangas 😊 sana makapas ako ngayung darating na exam 😢

@jin_cotl 3 месяца назад

This video seriously helped me. I think it’s better for people who are reviewing this subject than learning for the first time as the video skipped slightly

@trinbim 2 месяца назад

I agree with this😭😭

@verjiniafetalvo5741 Год назад

Gread 9 po ako sa dalig national high school sa antipolo

@MathTeacherGon Год назад

Hello keep on learning... I hope na mashare nyo ito sa classmates mo

@ParbinSultana-wh3th Месяц назад

Excellent explanation 😊

@MathTeacherGon Месяц назад

Glad it was helpful!

@AH2i-cp Месяц назад

mas naiintindihan ko po kayo kesa sa teacher ko kasi pwede i rewind hahaha,magkaiba po kasi kayo ng way ng pagsagot ng teacher ko.pero ginagaya ko po yung sayo sir kasi mas naiintindihan k ehh yung sa teacher ko number one plng puno na yung kalahati ng board ehh tas magulo pa kahit saan nilalagay di magkakasunod sunod kaya di ko maintindihan,btw thank you teacher gon

@zackgenesis4335 10 месяцев назад

Grade 9 St. Therese of Calcutta, University of Perpetual Help System, biñan campus

@MathTeacherGon 10 месяцев назад

malapit lang sa akin.. I am from Carmona Cavite...

@angeloparmis2076 2 месяца назад

Solution: x²+7x+10 is less than/equal to 0. (X+5)(X+2) -> (Factoring) X=-5; X-2 -> (Critical Points included) We have the solutions(based on the graph and the critical points, which are included because the sign used is less than or equal to and that the solutions on the left interval are included): 0,-1,-2,-3,-4,-5. Substitution: (-5+5)(-5+2) is less than/equal to 0 (0)(-3) is less than/equal to 0 0 is less than/equal to 0: TRUE. For substitution of -4, the outcome is TRUE(The answer is -2

@ma.andreasoriano3356 24 дня назад

The left, middle, right side are all false

@zandrobernal Месяц назад

MARIKINA,(NHS-NANGKA HIGH SCHOOL)GRADE 9 MAGNANIMOUS

@jesicanajaran84 11 месяцев назад

Grade 9 Wealth of Nations Ednas School Dagupan

@nnojclips1895 Год назад

what if theyre both Negative What number should i chose If not 0

@nasvaa Год назад

choose for a smaller number so easier to solve!

@JerickOlasiman 10 месяцев назад

Section 1 po ako grade-9 perseverance Luyang National High School (LNHS) in san remigio cebu, marami akung natutu sayu sir thankyou❤

@Yuki_womp 2 месяца назад

Perfect go to if you wana advance read tbh, The explanations are so clear and easy to understand

@MARGZCAMENERO-sl1fd 8 месяцев назад

Grade 9 Molave, Taguibo Mati City Davao Oriental❤

@MathTeacherGon 8 месяцев назад

Wow.. keep it up!

@Machiruda13 23 дня назад

Grade 9- Emerald, Jehousua Academy Marikina (private)

@LeonNoel1 26 дней назад

_9-pagggalang pinaka pogi marcilino M. santos national highschool_ _Antipolo_

@MathTeacherGon 25 дней назад

wow! thank you for watching!

@alexandersadoguiovlog1294 10 дней назад

Grade 9 RM Cathedral School of La Naval

@vincentbarigues283 Месяц назад

Thank you sir❤

@yunoasta-xu1ig Год назад

Hello sir new watcher here!i am a grade 9 student of 9 mulawin from Fe Del Mundo National High school in Mansalay Oriental Mindoro,thank you for making this,it helped me a lot!:)

@mvsy203 Год назад

Sir ask lang po, may video po ba kayo paano i-solve ganitong proble? If set A = {1,3,5,7}, set B = {1,4,7}, find the value of A - B

@gr4y185 Год назад

Download mo askAI at mga iba pang AI tulad ng bing

@ayomidebabajide3308 7 месяцев назад

tysm this is so helpfulll as for the less than sign can it just be changed to = to like that at any time a quadratic inequality??could I do that to any quadratic inequality?

@ayomidebabajide3308 7 месяцев назад

and is this how u end it in every equation on the lines

@jin_cotl 3 месяца назад

Yes. But make sure not the entire steps, and only the beginning to find what x equals

@markjerrosalcedo8049 26 дней назад

how to represent it in set builder notation?

@friiholike2942 6 месяцев назад

Awesome I learned a lot😊

@MathTeacherGon 6 месяцев назад

Glad it was helpful!

@xX_AL_Xx 11 месяцев назад

grade 9 Neptune sa Jamindan National High School (JNHS) new ako sa channel na to

@ChristianPPua 25 дней назад

Grade 9 and Philippine cultural college(quezon)

@NashaeTorino-c4l 27 дней назад

What if sa given ay parehas ay - ? Magiging - ba? At pag ni transpose ay parehas na positive?

@Millicentjade Месяц назад

Grade-9 Avocado,Tanza Cavite.tanza national trade school

@shandrell 9 месяцев назад

Grade 9 St Rita Of Cascia, St Nicholas Chatholic School Of Mariveles

@raymundking5723 11 месяцев назад

pano naman po kung coefficient yung x2 like may kasamang number like ganto po 2xsquare+2x-3??

@sussybeluga09 11 месяцев назад

Interval Notation: [-5,-2] Am I right?

@hanchmt2823 11 месяцев назад

Postive 2

@ayomidebabajide3308 7 месяцев назад

for the interval notation are negative 5 and 2 meant to b next together because they are x,x I thought ut was only. x,y

@jin_cotl 3 месяца назад

In this case, the interval notation is only showing what numbers there are. The (x,y) are excluded in this case.

@jhonjaymiao4377 11 дней назад

Can you do x²-5x-14>0 please

@g25sualogsomiyya39 5 месяцев назад

Grade 9 Abu Hurayrah, Al Munawwara Islamic School, Davao City

@HookersForsaleMl Месяц назад

Maam ethel or no?

@FutureArmySoldier Месяц назад

Grade 9 Science, Technology, Engineering(STE) Dalton. Samar National School

@ryanpancho1721 3 месяца назад

Sir, good day, ang -5 is satisfies the quadratic inequalities, hindi po ba ito solution?

@jasonj5599 7 месяцев назад

Hi Teacher Gon, ,can we use discriminant < 0 instead of factorising?

@heriellemay Год назад

tysm nalilito ako knina sa class now gets ko na tysm sir

@ravielbeaumontd.clarin6524 Год назад

14:13 Section A: False Section B: True Section C: False Edit: Tama ba sir? hehe

@poobah2938 10 месяцев назад

interval notation [-5, -2]

@jibeeunzziin2218 8 месяцев назад

Section A: false Section B: true Section C: true

@jasimharoon5335 11 месяцев назад

Great..like it. Sometimes you use different language.

@rickycondesa7440 Месяц назад

Bakit aabot pa Ng step 5 Yung samin sir?

@PeteManabat 10 месяцев назад

Galing teacher! Parent here!

@hanchmt2823 11 месяцев назад

May natutunan ako sir kaso makalimutin utak ko eh hahaha

@russianboi8524 7 месяцев назад

-10 is less than 2 yes pero why did we compare it to 2 im getting confused dapat ba lahat ng scenario na ganyan ma compared sa 2? so if yung number ay less sa 2 tama na agad?

@jin_cotl 3 месяца назад

I’m not sure what you mean, 2 isn’t being compared to -10

@russianboi8524 3 месяца назад

@@jin_cotl Eh late ka na kuya bagsak na ako sa 3rd quarter saka tapos na school year ko AHAHHAHGAHGAH

@jammyeun5417 Год назад

Grade 9 Ruby TNHS!! Im advance reading because i have problems understanding math i hope to improve moree and the video really helped me to understand thankyouuuu teacher gon

@lijjjuo9336 Год назад

eyy I’m also grade 9!!! goodluckkk!!!

@MusicMixer123 8 месяцев назад

Sa carmona cavite rin po ako naka tira... baka po nag kikita tayo

@kentcedrickdhenielvilano5858 10 месяцев назад

G9-Diana MSEU HS Salamat po Sr tinulungan nyo po ako sa monthly exam😎👍

@andreiarlantico1219 Год назад

G. 9-Euclid Regional Science High School III present po

@RuthArrojado 10 месяцев назад

For example po x²+10

@MusicMixer123 8 месяцев назад

Grade 9 Mendeleev CDLI Binan po

@nicsusm.315 11 месяцев назад

sir ask ko lang po yung sa bandang 6:35 sa set b na 0 minus 2= -2 ask ko lang po kung pano naging negative 2 yung sagot. sana mapansin

@Andrealyzza12 11 месяцев назад

naging -2 sya kase mas malaki yung 2 kaysa sa 0 at ang 2 naman ay negative so susunod sya sa negative sign ng 2 kaya -2 yung sagot..at kapag e cancel mo lang ang 0 sa 0-2, -2 pa rin yung sagot...sana naka tulong po ito.