Sagot :
Réponse :
Explications étape par étape
Bonjour
Dans les exercices 95 à 98, factoriser au maximum chacune des expressions.
95
A=4(x - 3) + x (x - 3)
A = (x - 3)(4 + x)
B= x2 - 4x
B = x(x - 4)
C= 2x(x + 1) - 4(x + 1)
C = 2(x + 1)(x - 2)
D=5.x2 + x
D = x(5x + 1)
96
A=(x + 2)(x - 1) + (3x + 5) (x + 2)
A = (x + 2)(x - 1 + 3x + 5)
A = (x + 2)(4x + 4)
A = (x + 2) * 4(x + 1)
A = 4(x + 2)(x + 1)
B=7 (5 – x) - (2x + 3) (5 - x)
B = (5 - x)(7 - 2x - 3)
B = (5 - x)(-2x + 4)
B = (5 - x) * 2(-x + 2)
B = 2(5 - x)(-x + 2)
97
A=(3x + 1) (x +4) - (2x - 5) (x + 4)
A = (x + 4)(3x + 1 - 2x + 5)
A = (x + 4)(x + 6)
B=(7x - 3)2 - x (7x-3)
B = (7x - 3)(7x - 3 - x)
B = (7x - 3)(6x - 3)
B = (7x - 3) * 3(2x - 1)
B = 3(7x - 3)(2x - 1)
C=2-X-(2-x)2
C = (2 - x)(1 - 2 + x)
C = (2 - x)(x - 1)
98
A=(2x + 4) (x-3) ?????
B=6x (x + 4) + 2(x - 2) (x + 4)
B = (x + 4)(6x + 2(x - 2))
B = (x + 4)(6x + 2x - 4)
B = (x + 4)(8x - 4)
B = (x + 4) * 4(2x - 1)
B = 4(x + 4)(2x - 1)
C=5(x + 1)2 – (3x - 2) (x + 1)
C = (x + 1)(5(x + 1) - 3x + 2)
C = (x + 1)(5x + 5 - 3x + 2)
C = (x + 1)(2x + 7)