Question

Calcule as expressões (×+2 ). (×-1)2

Answer 1

Explicação passo-a-passo:

(x+2).(x-1)²=

=(x+2).(x-1).(x-1)

=(x+2).(x²-1x-1x+1)

=(x+2).(x²-2x+1)

=x³-2x²+x+2x²-4x+2

=x³-2x²+2x²+x-4x+2

=x³+0 -3x+2

=x³-3x+2