Question

help!!!!

Answer 1

1:

\(=\dfrac{2x-2y+x+y-3x}{\left(x-y\right)\left(x+y\right)}=\dfrac{-y}{\left(x+y\right)\left(x-y\right)}\)

2: \(=\dfrac{-x}{2\left(x-1\right)}+\dfrac{x+1}{2\left(x-1\right)\left(x+1\right)}\)

\(=\dfrac{-x^2-x+x+1}{2\left(x-1\right)\left(x+1\right)}=\dfrac{-1}{2}\)