Question

giúp mình câu b, c

Answer 1

b: \(P=A:B\)

\(=\left(\dfrac{x+6+2x-2+x^2+x}{\left(x+1\right)\left(x-1\right)}\right):\dfrac{x+2}{3\left(x-1\right)}\)

\(=\dfrac{\left(x+2\right)^2}{\left(x+1\right)\left(x-1\right)}\cdot\dfrac{3\left(x-1\right)}{x+2}=\dfrac{3\left(x+2\right)}{x+1}\)