## anonymous 5 years ago 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.

1. anonymous

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

2. anonymous

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

3. anonymous

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

4. amistre64

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

5. anonymous

ack... lol

6. amistre64

:)

7. anonymous

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

8. anonymous

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

9. anonymous

It is sqrt(3x) -4

10. amistre64

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

11. anonymous

Yeah, I dont know where I got 300/6

12. amistre64

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

13. anonymous

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

14. anonymous

I really appreciate the help, tremendously.

15. amistre64

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

16. amistre64

:)

17. 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.

18. amistre64

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

19. anonymous

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

20. anonymous

brb

21. amistre64

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

22. 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 :/

23. anonymous

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

24. amistre64

:)

25. anonymous

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

26. anonymous

please disregard the one-wordness there lol

27. amistre64

add 4 to both sides first

28. amistre64

then square both sides

29. anonymous

i understand the method. I get confused with fractions

30. anonymous

ack....

31. anonymous

so wait....

32. amistre64

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

33. amistre64

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

34. anonymous

OOOOO

35. anonymous

wow...

36. anonymous

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

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