Loussinee29ask
résolu

bonsoir je dois Factoriser les expressions :
A = x(x + 1) + 2(x + 1)
B = (t - 3)2 – t(t - 3)
C = (5x – 4) (3x + 1) + (2 - x)(5x – 4)
D = 2y(8y - 3)-(3-2y)(8y - 3)​

Répondre :

Bonsoir,

A = x(x+1)+2(x+1) = (x+2)(x+1)

B = (t-3)2-t(t-3) = (t-3)(2-t)

C = (5x-4)(3x+1)+(2-x)(5x-4) = (5x-4)[(3x+1)+(2-x)] = (5x-4)(2x+3)

D = 2y(8y-3)-(3-2y)(8y-3) = (8y-3)[2y-(3-2y)] = (8y-3)(4y-3)

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