Question

http://prntscr.com/3cynup

Answer 1

? well, since its telling you to change a negative exponent to a positive, just turn the -2 into a 2 on y^-2 (correct me if I'm wrong)

Answer 2

Here's where it'd be great to have a table of the properties of exponents handy. Have you made one up?

The property governing the math problem you've posted looks like this:\[a ^{-n}=\frac{ 1 }{ a ^{n} }\] .... please apply that to your math problem now, OK?

Answer 3

ahh, so i was wrong, nice to know :)