Question

factories 2x cube + x square -2x - 1​

Answer 1

$\bold{2x^3+x^2 −2x−1}$

$\bold{=x^2 (2x+1)−1(2x+1)}$

$\bold{=(x^2 −1)(2x+1)}$

$\bold{=(x+1)(x−1)(2x+1)}$