Question

Multiplicação de Polinômios:

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

Answer 1

= (x + 2).(x + 1).(2x - 1)

= (x² + x + 2x + 2).(2x - 1)

= (x² + 3x + 2).(2x - 1)

= 2x.x² - 1.x² + 3x.2x - 1.3x + 2.2x - 1.2

= 2x³ - x² + 6x² - 3x + 4x - 2

= 2x³ + 5x² + x - 2

Answer 2

((x+2)(x+1))(2x-1)=(x²+3x+2)(2x-1)=
=2x³+(6-1)x²+(4-3)x-2=
2x³+5x²+x-2=...