Simplify the product: x−1x+2⋅x2+4x+4x2−1\dfrac{x-1}{x+2} \cdot \dfrac{x^2+4x+4}{x^2-1}x+2x−1⋅x2−1x2+4x+4.
x+2x+1\dfrac{x + 2}{x + 1}x+1x+2
x−2x+1\dfrac{x - 2}{x + 1}x+1x−2
111
x+2x−1\dfrac{x+2}{x-1}x−1x+2