Exercice 1
Factoriser les expressions suivantes :
A = 4x2 -9+(2x+3)(x - 2);
B = x2 - 6x +9+(x – 3)(2x + 1).
Aidez moi svp !!
Factoriser les expressions suivantes :
A = 4x2 -9+(2x+3)(x - 2);
B = x2 - 6x +9+(x – 3)(2x + 1).
Aidez moi svp !!
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A = (2x-3) x (2x+3)+(2x+3) x (x-2)
= ( 2x+3) x (2x-3+x-2)
= ( 2x +3) x (3x-5)
B = (x-3) x (x-3+2x+1)
= (x-3) x ( 3x-2)