DEVELOPPER et réduire les expressions A = (-4x-5)(4x-7) B = (8-8x)(-2x-5) C = 3 (4x-7 )(7x +5) D = 2x (-x-7)(10x + 5)
Mathématiques
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Question
DEVELOPPER et réduire les expressions
A = (-4x-5)(4x-7)
B = (8-8x)(-2x-5)
C = 3 (4x-7 )(7x +5)
D = 2x (-x-7)(10x + 5)
A = (-4x-5)(4x-7)
B = (8-8x)(-2x-5)
C = 3 (4x-7 )(7x +5)
D = 2x (-x-7)(10x + 5)
1 Réponse
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1. Réponse Mathieu38150
A= -16x²+28x-20x+35=-16x²+8x+35
B=-16x-40+16x+40x=16x²+24x-40
C=(12x-21)(7x+5)=84x²+60x-147x-105=84x²-87x-105
D=(-2x²-14x)(10x+5)=-20x³-10x²-140x²-70x=-20x³-150x²-70x
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