Question

Multiplique os polimonios: a) (x+4).(x+3).(x-5) b) (x+5).(x+0).(x-7)

Answer 1

Explicação passo-a-passo:

a)

(x + 4).(x + 3).(x - 5)

= (x² + 3x + 4x + 12).(x - 5)

= (x² + 7x + 12).(x - 5)

= x³ + 7x² + 12x - 5x² - 35x - 60

= x³ + 2x² - 23x - 60

b)

(x + 5).(x + 0).(x - 7)

= (x² + 5x).(x - 7)

= x³ + 5x² - 7x² - 35x

= x³ - 2x² - 35x