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Sagot :

MPOWER

Réponse :

Bonjour,

A = 8(x - 3)

= 8x - 24

B = 4(2x + 9)

= 8x + 36

C = -5(-4 - 3x)

= 20 + 15x

D = -4(0,5x + 11)

= -2x - 44

A = (7x + 3)(x + 2)

= 7x² + 14x + 3x + 6

= 7x² + 17x + 6

B = (4x + 1)(-4x + 2)

= -16x² + 8x - 4x + 2

= -16x² + 4x + 2

C = (3 - 4x)(2x - 9)

= 6x - 27 - 8x² + 36

= -8x² + 6x + 9

D = (-4x + 5)(-x + 2)

= 4x² - 8x - 5x + 10

= 4x² - 13x + 10

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