Question

Sendo:
A = x-3 C = x+1
B = x-2 D = X+4
Calcule:
a) AB + C c) BD + C
b) A + CD d) ABC

Answer 1

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Ola Vivi

A = x - 3
B = x - 2
C = x + 1
D = x + 4

AB = (x - 3)*(x - 2) = x² - 5x + 6
BD = (x - 2)*(x + 4) = x² + 2x - 8
CD = (x + 1)*(x + 4) = x² + 5x + 4
ABC = (x - 3)*(x - 2)*(x + 1) = x³ - 4x² + x + 6

a) AB + C = x² - 5x + 6 + x + 1 = x² - 4x + 7
b) A + CD = x - 3 + x² + 5x + 4 = x² + 6x + 1
c) BD + C = x² + 2x - 8 + x + 1 = x² + 3x - 7
d) ABC = x³ - 4x² + x + 6

pronto