Réduire les expressions suivantes :
a. 4x x (2x) + 4x x (-1) - 2 x 2x - 2 × (-1)
B. 7×X-3×X-3×7-2X × X-7 - 7×(-3)
a. 4x x (2x) + 4x x (-1) - 2 x 2x - 2 × (-1)
B. 7×X-3×X-3×7-2X × X-7 - 7×(-3)
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Réponse:
G=4x x (2x) + 4x x (-1) - 2 x 2x - 2 × (-1)
G=8x²+(-4x)-4x2
G=8x²-4x-8