1/3 times square root of 2x = 2, many don’t FULLY get this!

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How to solve a square root / radical equation.
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5 окт 2024

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Комментарии : 65

@susanm1109 Год назад

First multiply both sides by 3, so the square root of 2x is 6. Then square both sides, so 2x is 36. Divide both sides by 2: x=18

@susanm1109 Год назад

@@juliecranford534 Thank you for catching that and for letting me know. I’ve edited it now.

@olivemd Год назад

I think doing your questions has worked. I automatically got the answer in my head without thinking about which method to use. My 73 year old brain is getting faster. Thanks.

@Kleermaker1000 2 месяца назад

What kind of drink did you swallow? :)

@chesswizard05 Год назад

1/3(square root of 2x)=2 Multiply both sides by 3 Square root of 2x =6 Square both sides 2x=36 X=18

@TheRockMorton Год назад

That's how I solved for x. But failed to verify answer.

@kennethdias9988 11 месяцев назад

18 is what I got off the top of my head

@vincentrobinette1507 Месяц назад

The way this was solved on the tablet is EXACTLY the way I solved this in my head!

@robpatterson2861 Год назад

I love your examples! This is a terrific one! Thanks❤

@devonwilson5776 Год назад

Greetings. The value for × is 18. From the expression given it should be realized that what we have is simply the square root of 2x divided by 3 equals 2. That should result in the square root of 2x = 6 after multiplying by 3, thereafter you square both sides to get 2x = 36 and after that, you divide both sides by 2 to get x=18.

@gerardb.ducoudray8881 Год назад

greetings 2u2

@bigdog3628 4 месяца назад

super simple multiply both sides by 3 this leaves us with a 6 on the right hand side and a sqroot on the left. so square both sides then divide by 2 (the coefficient of the x term in this problem). This leaves us with x = 18. Now, since we squared a root we have to prove the answer. 2 * 18 is 36. The Sqroot of 36 is 6. Now we multiply 1/3 by 6, which is the same as saying 6/3. Which is 2 and proves that x = 18.

@pennstatefan 6 месяцев назад

Multiply both sides by 3 and one is left with(2x)^1/2 = 6. then, one squares both sides and one is left with 2x = 6^2, where x = 18

@thomasharding1838 Месяц назад

A negative answer is not under consideration because you are not looking for the square root of X (or 2X) but the square root was defined as TWO. Because it is positive, its square cannot be negative. Therefore, X is positive.

@aryusure1943 3 месяца назад

Reviewing what I learned the first time (3 months ago) in this video I can say that I am now part of the 10% who can figure that out with the correct procedure. Thanks!

@bushputz Год назад

Had the answer in about 15 seconds, but started doubting myself because it seemed too simple.

@thenetsurferboy 7 месяцев назад

Only a grade grade 7 zombie would get that wrong

@mauriziograndi1750 3 месяца назад

To be true that 1/3 is equal to 2 the only prerequisite is that whatever is under the square root sign has to be 36. So x must be 18. Then the resulting square root is 6 and 1/3 of 6 = 2.

@JohnHughesChampigny 8 месяцев назад

multiply both sides by 3, square both sides*, now you have 2x=36 so x=18. (* because if a=b then a^2 = b^2)

@pysankar 7 месяцев назад

I just asked myself a few questions to get to the right answer. What number is two a third of? Six. Six is the square root of what number? 36. Two times what number equals 36? 18.

@johnnyllooddte3415 Год назад

sq rt 2x = 6 sq rt 36=6 36/2 =x x =18 best i can figure

@danielnelson9411 Год назад

We know something divided by 3 is 2. That would be 6. The square root of something is 6. That would be 6 squared or 36. What times 2 is 36? 18 There. I showed my work. :^)

@MarcusGray-b3f Год назад

So I remember you have to check both the positive and negative numbers for the correct answer!!! So I hear what he is saying and disagree on the throwing out the negative all the time because sometimes they both work.

@darrylsmith-oy7vp Год назад

😃🤗 So much fun! Refreshing.

@aryusure1943 7 месяцев назад

I got the answer after the first step, checked my solution which was right but I was not sure about the method for getting rid of the square root. So you were right. I did not get the whole thing. ;) Still need to practice.

@mingkee27 Год назад

It sounds complicated... Get rid of 1/3 first with *3 1/3 *3√2x = 2*3 >>> √2x = 6 Now process square root 2x = 6² >>> 36 Divide by 2 x = 36/2 >>> 18 x = 18

@MarcusGray-b3f Год назад

Sometimes both positive and negative results work so check both numbers!!!

@cscms28 Год назад

16, i meant 18. honest. figured that must find the square root. 2 is third of 6, so the square root must be 6. 6x6 is 36, half that is 18. so x=18

@bertarndt9953 Год назад

Have it I less then a minute. My head is still working at 70yrs old.

@harrymatabal8448 7 месяцев назад

Okay lets start at the beginning

@rodrodrigues5402 7 месяцев назад

What a silly claim that many will not know where to start!

@Bizmyurt 8 месяцев назад

You see it directly

@homeauburnRaja-hm3gq 7 месяцев назад

2x=36 or x=18

@Yvonnethatgirl Год назад

×=18

@danieldennis9831 Год назад

√2x=6 2x=36 x=18

@duncanmcdane388 Год назад

Dang, I should have paid more attention in high school 😞

@bobcornwell403 Год назад

I came up with x = 18.

@MaggieDaniels-nc6vg 3 месяца назад

X=18

@stevenjohnson1143 Год назад

18=x

@ernestofelix7149 2 месяца назад

@vineyanand-ed7hg 2 месяца назад

3 sec question

@seibertmccormick184 7 месяцев назад

Thanks. I didn't get the answer. I learned something. Thanks.

@randallgreen4084 Год назад

I got x=18

@mulawbelay9736 Год назад

What about PEMADS

@TokyoXtreme Год назад

The square root symbol is considered E for exponent.

@janeoleary8454 Год назад

Would not know WHERE TO BEGIN

@pennymoreland9602 Год назад

This was always a problem for me 😢.

@NissankaPerera-n9t 7 месяцев назад

@mulawbelay9736 Год назад

6 is the answer

@Ca_milo_G Год назад

@janeoleary8454 Год назад

This is beyond my capacity

@Mark-kt5mh Год назад

Maybe for now, don't give up

@janeoleary8454 Год назад

@@Mark-kt5mh too late !!! But I have learned other things this past week from these videos. I never ever took higher math in HS. I'm 75 and can now do SOME ALGEBRA

@robduijf2752 Год назад

@@janeoleary8454It's never too late! You don't have to become a genius, but solving these math problems do stimulate the neurons and the neural network in that wonderful biological computer inside your skull!

@thenetsurferboy 7 месяцев назад

You never reached grade 7?

@henkhu100 23 дня назад

Stop making those terrible errors, see 10:19 ⎷36. is equal to 6 and not equal to -6 or 6 ⎷36 is the principle square root of 36 and that means that the value is 6 It is a shame that you present yourself as a math teacher don't know that.