Question

$(x - 4)(x + 4)(x + 1)^2$

Answer 1

(х²-16)(х²+2х+1)

х⁴+2х³+х²-16х²-32х =
х⁴+2х³-15х²-32х

Answer 2

=(х^2-16)(x+1)^2=(х^2-16)(x^2+2x+1)=x^4+2x^3+x^2-16x^2-32x-16 =x^4+2x^3-15x^2-32x-16