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HUSTLER
Answered

On considère les expressions suivantes: A=(x+4)²-3(2x-3) B= (3x-7)²-(8x-5)² 1. Développer et réduire A. 2. Factoriser B

Sagot :

MDR66

A=(x+4)²-3(2x-3)g(x)= (2x+3)²-(x+4)²= (2x+3+x+4)(2x+3-x-4)= (3x+7)(x-1)

WINNER123

A = x²+8x+16 -(6x-9) = x²+8x+16+6x+9 = x²+14x+25

 

B = (3x-7-8x+5)(3x-7+8x-5) = (-5x-2)(11x-12)

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