Réponse :
A = 2*x(3x+2) + 2*x(2x+1) + 2(2x+1)(3x+2)
A =6x²+4x+4x²+2x+12x²+14x+4
A = 22x²+20x+4
V = x(2x+1)(3x+2)
V = (2x²+x)(3x+2)
V = 6x³+4x²+3x²+2x
V =6x³+7x²+2x
3) tu remplaces x par5, tu calcules
A =22*5²+20*5+4=...
V = 6x³+7x²+2x
V= 6*5³+7*5²+2*5=....
Explications étape par étape :
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Réponse :
A = 2*x(3x+2) + 2*x(2x+1) + 2(2x+1)(3x+2)
A =6x²+4x+4x²+2x+12x²+14x+4
A = 22x²+20x+4
V = x(2x+1)(3x+2)
V = (2x²+x)(3x+2)
V = 6x³+4x²+3x²+2x
V =6x³+7x²+2x
3) tu remplaces x par5, tu calcules
A = 22x²+20x+4
A =22*5²+20*5+4=...
V = 6x³+7x²+2x
V= 6*5³+7*5²+2*5=....
Explications étape par étape :