PLEASE HELP!
√(3x)-4=6
I know the answer is 300/6. I just need help explaining the steps. I just do it, but have trouble explaining.

- anonymous

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- anonymous

36 = 3x-4
40 = 3x
x = 40 /3

- anonymous

so what i didnt get, was even though the 3x was square root, you still divide. I understand you have to simplify.

- anonymous

because 3x is like 3*x, so you do the opposite on the other side of the equation.

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## More answers

- amistre64

sqrt(3x) -4 = 6 ; +4 each side
sqrt(3x) = 10 ; ^2 both sides
3x = 100 ; /3 both sides
x = 100/3

- anonymous

ack... lol

- amistre64

:)

- anonymous

I get too confused on simple mathematics. Im sorry. lol

- anonymous

i don't sure the function is sqrt (3x) or sqrt (3x-4), thats why parentheses are important

- anonymous

It is sqrt(3x) -4

- amistre64

i dont get 300/6 tho...which is the 'right' answer lol

- anonymous

Yeah, I dont know where I got 300/6

- amistre64

probably off a sheet of paper you wadded up and threw in the trash where it belonged? :)

- anonymous

Probably, I might have did 100/3 just typo maybe ? lol.

- anonymous

I really appreciate the help, tremendously.

- amistre64

you know; ive answered over 300 questions and still havent gotten the 1st answering machine badge? ...

- amistre64

:)

- anonymous

How do I give a badge.... i would give it to you if I could lol. This is my first time using this site.

- amistre64

badges are given thru performing certain tasks; not handed out really; medals for good answers can be given by the masses tho ;)

- anonymous

I see, well I wish you the best of luck :) You'll definitely get it in time. I really appreciated the help. Seriously.

- anonymous

brb

- amistre64

you might have to hit f5 to refresh your browser to see any 'good answer' buttons next to our names tho

- anonymous

Why is it, when i try it myself... now i am getting 4/3? I am just trying to do it and get the right answer :/

- anonymous

nevermind, i see. 4+6. Ah. lol

- amistre64

:)

- anonymous

now how would I write this out to double check? would it be....
\[\sqrt{3(100/3)}-4=6 then multiply both sides by 3?\]

- anonymous

please disregard the one-wordness there lol

- amistre64

add 4 to both sides first

- amistre64

then square both sides

- anonymous

i understand the method. I get confused with fractions

- anonymous

ack....

- anonymous

so wait....

- amistre64

3*(100/3) = 100
sqrt(100 = 10)

- amistre64

sqrt(100)=10
10-4 = 6 is true

- anonymous

OOOOO

- anonymous

wow...

- anonymous

Wow... i feel stupid at the moment :/

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