Sagot :
Bonsoir,
factoriser :
A=7a+56b= 7(a+8b)
B=(2x+3)²-(4x-7)(2x+3)
= (2x+3)(2x+3-4x+7)= (2x+3)(-2x+10)= 2(2x+3)(-x+5)= - 2 (2x+3)(x-5)
Bonsoir,
factoriser :
A=7a+56b= 7(a+8b)
B=(2x+3)²-(4x-7)(2x+3)
= (2x+3)(2x+3-4x+7)= (2x+3)(-2x+10)= 2(2x+3)(-x+5)= - 2 (2x+3)(x-5)