Question

Solve the following formula for W:
x=2W^2/Z

Answer 1

So you have:\[x=\frac{ 2W^2 }{ Z }\]It already help if you had:\[2W^2=...\]
If you have trouble doing that, imagine you had\[6=\frac{ 18 }{ 3 }\]The you would know in an instant what to do to write it as:\[18=...\]

Answer 2

I have this so far though?

Answer 3

Looks good!
So now you have to get from w² to w...

Answer 4

Thats the part i dont know how to do

Answer 5

IS IT RIGHT?

Answer 6

You mean take the root of xz/2? Then you are right!

Answer 7

Or do i keep the square\[\sqrt{XZ/2}^2\]d? \[\sqrt{XZ/2} =W\]

Answer 8

WAIT SO WHATS IS IT? D: i HAVE \[\sqrt{xz/2}\] I have this as an answer but i dont know if its right

Answer 9

Strictly spoken, there are two possibilities: \[W=\pm \sqrt{\frac{ xz }{ 2 }}\]To understand this, take a look at this: w²=16.
What is w? Well, because 4²=16, w=4.
But: (-4)²=16 as well, so w=-4 is also correct. There are two possibilities!

Answer 10

Thank you so much!!!!!!!!!