Question

multiplicação de polinomios
( 2x-2).(2x^2-4x+5)

b) (x^2-7×+8).(x-2)

Answer 1

a)
= ( 2x - 2).(2x^2-4x+5)
= 4x^3 - 8x^2 + 10x - 4x^2 + 8x - 10
= 4x^3 - 12x^2 + 18x - 10

b)
= (x^2-7×+8).(x-2)
= x^3 - 2x^2 - 7 x^2 + 14x + 8x - 16
= x^3 - 9x^2 + 22x - 16

Answer 2

a)
= ( 2x - 2).(2x^2-4x+5)
= 4x^3 - 8x^2 + 10x - 4x^2 + 8x - 10
= 4x^3 - 12x^2 + 18x - 10

b)
= (x^2-7×+8).(x-2)
= x^3 - 2x^2 - 7 x^2 + 14x + 8x - 16
= x^3 - 9x^2 + 22x - 16