Question

Ajudaaa.

Encontre os produtos abaixo.
(x+1) (x+10) (x+5).
(x+1) (x+2) (x+20).
(x+1) (x+4) (x+10).

Answer 1

= (x + 1).(x + 10).(x + 5)
= (x^2 + 10x + x + 10).(x + 5)
= (x^2 + 11x + 10).(x + 5)
= x^3 + 5x^2 + 11x^2 + 55x + 10x + 50
= x^3 + 16x^2 + 65x + 50

= (x+1) . (x+2) . (x+20)
= (x^2 + 2x + x + 2).(x+20)
= (x^2 + 3x + 2).(x + 20)
= x^3 + 20x^2 + 3x^2 + 60x + 2x + 40
= x^3 + 23x^2 + 62x + 40

= (x + 1).(x + 4). (x + 10)
= (x^2 + 4x + x + 4).(x + 10)
= (x^2 + 5x + 4).(x + 10)
= x^3 + 10x^2 + 5x^2 + 50x + 4x + 40
= x^3 + 15x^2 + 54x + 40