Question

Sendo p(x) = 5x - 8 e(x) = -2y - 1, então qual o valor de p(x).q(x) é:
e) -10xy - 5x + 16y +8
d) -10xy - 5x + 12y +8
b) -10xy + 5x - 16xy +8
a) -10xy + 5xy + 8y +8
c) -10xy + 5xy + 16y +8

Answer 1

Resposta:

e) - 10xy - 5x + 16y + 8

Explicação passo a passo:

p(x) = 5x - 8 e q(x) = -2y - 1

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p(x) · q(x) = (5x - 8) · (- 2y - 1)

p(x) · q(x) = 5x · (- 2y) + 5x · (- 1) + (- 8) · (- 2y) + (- 8) · (- 1)

p(x) · q(x) = - 10xy - 5x + 16y + 8