Question

Giúp em ạ :((

Answer 1

a: \(=\dfrac{x+2y-3x-2y}{x-2y}=\dfrac{-2x}{x-2y}\)

b: \(=\dfrac{x+x-1}{x-5}=\dfrac{2x-1}{x-5}\)

c: \(=\dfrac{x+3+x+x-3}{x\left(x+3\right)}=\dfrac{3x}{x\left(x+3\right)}=\dfrac{3}{x+3}\)

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

e: \(=\dfrac{x+2+2x-4+12}{\left(x-2\right)\left(x+2\right)}=\dfrac{3x+10}{\left(x-2\right)\left(x+2\right)}\)