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Multiplying and Dividing Rational Expressions 

Khan Academy
Подписаться 9 млн
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Multiplying and Dividing Rational Expressions

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21 авг 2024

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Комментарии : 71   
@Uptownfunky760
@Uptownfunky760 11 месяцев назад
Thanks had to rewatch many times because of the multiple breaks I had to take to cry.
@annonarmy
@annonarmy 8 лет назад
i have no idea what im doing.
@animationspace8550
@animationspace8550 3 года назад
nobody does
@suzette8711
@suzette8711 7 лет назад
When all you need to graduate is to pass math .... UGH!!!! 😭😭😭😭
@SweetLadiiM
@SweetLadiiM 7 лет назад
suzette8711 I'm in the same boat
@teehee5700
@teehee5700 4 месяца назад
i’m in that boat right now and i’m struggling so much
@noseymold9868
@noseymold9868 7 лет назад
All I want to know is how would I use this in real life.
@zackariahcraigjr1808
@zackariahcraigjr1808 7 лет назад
NoseyMold Teaching math, engineering, physics, etc
@zackariahcraigjr1808
@zackariahcraigjr1808 7 лет назад
NoseyMold Or even making RU-vid vids that teach other people how to do it while you make money
@jasumagaming9728
@jasumagaming9728 7 лет назад
So basically, no where. That's kinda like saying, "Teach everyone how to play an instrument because some of them will be musicians."
@tez817
@tez817 5 лет назад
@@jasumagaming9728 😂
@animationspace8550
@animationspace8550 3 года назад
calculating rocket trajectories like i'm trying to do with potassium nitrate and sucrose motor rockets, also plotting things in finance which is literally everywhere, and a lot of other applications
@sillynillybean
@sillynillybean 8 лет назад
I DONT UNDERSTAND WHAT YOU'VE JUST DONE
@ryanpower9580
@ryanpower9580 5 лет назад
This video requires more explaination in the places like where 7X(X+1)+2(X+1) becomes (7X+2)(X+1) (The math adds up, I just don't know how you got this answer) Or how the X went in front of (X+4)^2(X+4) Just a little more explaining so that listeners will fully understand factoring rules. The last problem is evil. lol
@SuperEpicmw2
@SuperEpicmw2 8 лет назад
I STILL DONT FUCKING GET IT!!!! IVE RE WATCHED THIS VIDEO 12 TIMES!!!!!
@Reventon1125
@Reventon1125 8 лет назад
+efef hhfefe 你太聪明了!
@rashadlouis8710
@rashadlouis8710 6 лет назад
tbh i dont know why im replying a yr later but thats because you dont write the pronlems down and solve them with him look for a different problem online and hey follow his steps
@Remascard
@Remascard 11 лет назад
I prefer to Divide and then conquer Thanks for the tut
@Ba6roos
@Ba6roos 8 лет назад
Wat the he'll is he doing
@hashtagirenis
@hashtagirenis 8 лет назад
about to throw up all over myself so i can go home and not take this test in an hour. this is so disrespectful.
@opmriotyy8489
@opmriotyy8489 2 года назад
how did it go?
@hashtagirenis
@hashtagirenis 2 года назад
@@opmriotyy8489 im sure i failed but. i graduated years ago and that’s all that matters 😂😂😂 thanks for checking.
@opmriotyy8489
@opmriotyy8489 2 года назад
@@hashtagirenis lol, I just love replying to comments that are 5+ years old and seeing if people respond.
@hashtagirenis
@hashtagirenis 2 года назад
@@opmriotyy8489 luckily i wasn’t dead or something. thanks for checking in 💀
@Unabatedhalo775
@Unabatedhalo775 Год назад
@@opmriotyy8489 as do I
@davinlee5907
@davinlee5907 6 лет назад
all i heard was A B a bee a B A bee aye bee aye B
@bruceyeager5581
@bruceyeager5581 7 лет назад
if this guy repeats something one more time I'm punching my computer
@MiFFtheMiFFER
@MiFFtheMiFFER 6 лет назад
Yan Wang i agree i agree
@jonnylee5000
@jonnylee5000 5 лет назад
Better tape your knuckles watching Sal Kahn then...
@rianadelapena1135
@rianadelapena1135 6 лет назад
Thank for this video, I have a learn😇☺
@08danjo
@08danjo 11 лет назад
I love the typo part
@kami9407
@kami9407 5 лет назад
I usually understand your vids but this one rlly confused me and I just learned how to add and subtract rational expressions so its not that I am missing info its just this vid couldnt make the connection
@crazzyman619
@crazzyman619 9 лет назад
i went ahead and did the problem just to find out that you make a typo.....
@KsOs.
@KsOs. 8 лет назад
Lol
@MegaWild7
@MegaWild7 7 лет назад
same!!
@vidkidkev
@vidkidkev 4 года назад
My teacher does not want us to do the whole ( a + b = #) Thing . she just wants us to factor it. I find it easier just to go straight to that.
@lemonysnicket100
@lemonysnicket100 11 лет назад
we are all human. he's allowed to make mistakes. it also helps to show mistakes that students often make when doing the problems themselves. its actually good, it helps us to spot potential mistakes.
@brettdier5608
@brettdier5608 8 лет назад
Nice. What did you use to write the solutions?
@YoshiFan501
@YoshiFan501 11 лет назад
final tomorrow! thanks!!!
@liamdyck6268
@liamdyck6268 3 года назад
Did you pass
@tez817
@tez817 5 лет назад
Dude you are more difficult than my school math teacher.
@caleb6595
@caleb6595 Год назад
When you realize that mathematics as a whole hasn’t given humanity a single thing besides cellphones, capitalism, and ever other horror of the modern age. Makes me really love learning about these concepts 😊
@habbometin2csocapb
@habbometin2csocapb Год назад
Are you being sarcastic?
@RG_STUDI005
@RG_STUDI005 4 месяца назад
First of all, even if the question is difficult, I will understand if I look again
@tez817
@tez817 5 лет назад
Everybody subscribe to "the Organic Chemistry tutor". He makes math 10 times much more understandable.
@Seattle206723
@Seattle206723 11 лет назад
Why can't A= -B ? Any one answer this please? If there is a lesson online that teaches this please let me know... Thanks
@jonnylee5000
@jonnylee5000 5 лет назад
So A + B = 0 would be like 5+ -5 =0 Since it cannot equal 0. He move the A over to the other side of the Equal sign the same as you would move any variable. 2x = 10. Divide both sides by 2 to get x = 5. In this case subtract B from both sides to get: A = 0 + -b or A = -B with no matter how you switch them, it will always be 0. Since the Denominator cannot be 0 in a fraction, A, does not equal -B (or else they'd cancel out to zero) A =/= -B.
@Bhuntah1
@Bhuntah1 11 лет назад
What is the meaning of "2 numbers multiplied equal 14"...that part has confused me. I would really appreciate the insight as it is some kind of trick. I factored without it but it was most likely harder as I used trial and error. Anyone can help?
@pogbrainy
@pogbrainy 7 лет назад
Jimmy Munoz factor by grouping
@milkymallowxs08
@milkymallowxs08 12 лет назад
I have a question? Can't the answer be just x+4 / x+1? ,,,, my answer is like this when i didnt have to do the inverse , i just divided it then cancellation
@mrslucygomez9
@mrslucygomez9 7 лет назад
why wouldn't you cancel them out first? couldn't you simplify the problem then multiply across?
@swamplhuge3296
@swamplhuge3296 7 лет назад
what program do you use to teach here?
@SmogHouseTradingCo
@SmogHouseTradingCo 11 лет назад
It is how you factor trinomials. /watch?v=GMoqg_s4Dl4
@nellacampbell
@nellacampbell 12 лет назад
me too ><
@RG_STUDI005
@RG_STUDI005 4 месяца назад
First a hard
@NoWcOoKiEz1
@NoWcOoKiEz1 13 лет назад
math hurts me
@aadhi-akhil2623
@aadhi-akhil2623 Год назад
Well….I am FAILING!!!
@bradq
@bradq 14 лет назад
wtf. why can't I watch the vids???? Is there a charge now??
@ClumpypooCP
@ClumpypooCP 7 лет назад
hi
@Nicholas-cm4zw
@Nicholas-cm4zw 3 месяца назад
Yes I totally do not understand.
@amymitchell4552
@amymitchell4552 6 лет назад
Whyyyyyyy????
@milkymallowxs08
@milkymallowxs08 12 лет назад
@milkymallowxs08 Ow my bad x+4/ x(x+1)
@chatoalan24
@chatoalan24 11 лет назад
Jealous teacher alert.
@MustardSplotch
@MustardSplotch 14 лет назад
i hate math
@danielginder3327
@danielginder3327 9 лет назад
@Mark Mungrove - My college professor makes the exact same kind of errors. It happens. Your critique of his work is childish and ignorant.
@greed8756
@greed8756 10 месяцев назад
talks in circles no help AT ALL!!!!!!!
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