Question

1.Resolva as multiplicações entre polinômios:
a) (2x+3)×(5x-8)

b) (8a²-1)×(5a²+a-6)

c) (4y)×(-7y³+x3y-2)

d) (2x-1)×(-x+5)×(6y-x+3)​

Answer 1

Resposta:

a) (2x+3)×(5x-8)

10x² - 16x + 15x - 24

10x² - x - 24

b) (8a²-1)×(5a²+a-6)

40a^4 + 8a³  - 48a² - 5a² - a + 6

40a^4 + 8a³ - 53a² - a + 6

c) (4y)×(-7y³+x3y-2)

-28y^4 + 12xy² - 8y

d) (2x-1)×(-x+5)×(6y-x+3)​

(2x² + 10x + x + 6) . (6y - x + 3)

(2x² + 11x + 6) . (6y - x + 3)

12yx² - 2x³ + 6x² + 66xy - 11xy + 33x + 36y - 6x + 18

12yx² - 2x³ + 6x² + 66xy - 11xy + 27x + 36y + 18