Réponse :
Explications étape par étape
Bonsoir
Factoriser :
= 25 - (3x + 1)^2
= 5^2 - (3x + 1)^2
= (5 - 3x - 1)(5 + 3x + 1)
= (-3x + 4)(3x + 6)
= (-3x + 4) * 3(x + 2)
= 2(-3x + 4)(x + 2)
= (2x + 3)^2 - 49x^2
= (2x + 3)^2 - (7x)^2
= (2x + 3 - 7x)(2x + 3 + 7x)
= (-5x + 3)(9x + 3)
= (-5x + 3) * 3(3x + 1)
= 3(-5x + 3)(3x + 1)
= (3z - 5)^2 - 100
= (3z - 5)^2 - 10^2
= (3z - 5 - 10)(3z - 5 + 10)
= (3z - 15)(3z + 5)
= 3(z - 5)(3z + 5)
= (3t - 5)^2 - (10 - 2t)^2
= (3t - 5 - 10 + 2t)(3t - 5 + 10 - 2t)
= (5t - 15)(t + 5)
= 5(t - 3)(t + 5)
