J'ai besoin d'aide svp
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Bonjour
Compléter :
(x - 2)(x + 2) + (x - 2)(x + 7)
= (x - 2)(x + 2 + x + 7)
= (x - 2)(2x + 9)
(2x + 1)(1 - x) + (2x + 1)(3 - 2x)
= (2x + 1)(1 - x + 3 - 2x)
= (2x + 1)(-3x + 4)
x(x + 2) + (x - 4)x
= x(x + 2 + x - 4)
= x(2x - 2)
(z + ?)(2z + 2) - (z + ?)(z + 8) = (z + 3)(z - 6)
= (z + 3)(2z + 2 - z - 8)
= (z + 3)(z - 6)
(x - 3)(x - 1) + (x - ?)(x + 5) = (x - 3)(2x + ?)
= (x - 3)(x - 1 + x + 5)
= (x - 3)(2x + 4)