Question

(x+1)(x 2 −x+1)+(2−x)(4+2x+x 2 )=

Answer 1

(х+1)(х²-х+1)+(2-х)(4+2х+х²)=х³-х²+х+х²-х+1+8+4х+2х²-4х-2х²-х³=9

Answer 2

Ответ:

$- {3x}^{2} + 6x + 9$