Question

I don't know why my Barron review book continues to give me trick questions, but here's another on rational expressions.

Answer 1

\[\frac{ a^{-1}+b^{-1} }{ a^{-2}+b^{-2} }\]

Answer 2

i would think this is a+b

Answer 3

as i just divide the like terms

Answer 4

okay its easy move a b exponent t the top

Answer 5

but it's not o.o

Answer 6

You just switch numerator and denominator and make the powers positive.

Answer 7

And we would be stuck at