Verified answer

Réponse :

(5x-2)(5x-8)-(3x-5)(x+7) = 22x²-66x+51

Explications étape par étape :

(5x-2)(5x-8)-(3x-5)(x+7) = 25x²-40x-10x+16-(3x²+21x-5x-35)

(5x-2)(5x-8)-(3x-5)(x+7) = 25x²-50x+16-3x²-21x+5x+35

(5x-2)(5x-8)-(3x-5)(x+7) = 25x²-3x²-50x-21x+5x+16+35

(5x-2)(5x-8)-(3x-5)(x+7) = 22x²-66x+51