View Full Version : An equation on the PSAT practice!
survivorboi
Oct 24, 2009, 10:15 AM
I have trouble doing this problem:
If x= (square root of 3-y), what is y in terms of x?
How do I do this ?
Unknown008
Oct 24, 2009, 10:19 AM
Well, do make sure you isolate y, and this is by doing the same mathematical operation on both sides of the equal sign so that the equality remains true.
x = \sqrt{3-y}
How can you remove the square root?
Unknown008
Oct 24, 2009, 10:22 AM
survivorboi? Are you still here?
survivorboi
Oct 24, 2009, 05:19 PM
You have to square both sides of the equation to cancel the squ root. After that, I'd by x^2=3-y and I can solve that =) thanks!
Unknown008
Oct 24, 2009, 11:13 PM
You're welcome! :)