Question

calcular: operar y simplificar 4-4(x-1)(x+2)+4x

Answer 1

4-[4x+4][x+2]+4x=
4-[4x^2+8x+4x^2+8]+4x=
4-[8x^2+8x+8]+4x=
4-8x^2-8x-8+4x=
8x^2-4x-4

Answer 2

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

4-4($x^{2} +X-2$) +4X

4 -4$x^{2}$-4x+8 +4x
 
4 -$4x^{2}$ +8

$- 4^{2} +12$