Developer et simplifier les expressions suivantes: B=(3x-7)(2x+3)-(4x²+2x-7) C=(5x+3)(4x-1)-5x(3x-2) D=(7x+4)(2x-5)-(4x+3)(4x-3)
Mathématiques
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Question
Developer et simplifier les expressions suivantes:
B=(3x-7)(2x+3)-(4x²+2x-7)
C=(5x+3)(4x-1)-5x(3x-2)
D=(7x+4)(2x-5)-(4x+3)(4x-3)
B=(3x-7)(2x+3)-(4x²+2x-7)
C=(5x+3)(4x-1)-5x(3x-2)
D=(7x+4)(2x-5)-(4x+3)(4x-3)
1 Réponse
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1. Réponse nonotata
B=(3x-7)(2x+3)-(4x²+2x-7)
b = 6x²+9x-14x-21 -4x²-2x+7
b = 2x²-7x -14
C=(5x+3)(4x-1)-5x(3x-2)
c = 20x²-5x+12x-3 -15x²+10x
c = 5x²+17x-3
D=(7x+4)(2x-5)-(4x+3)(4x-3)
d = 14x²-35x+8x-20 -(16x²-12x+12x-9)
d = 14x²-27x -20 -16x²+9
d = -2x²-27x-11