Answered

Bonjour est-ce quelqu’un pourrai m’aider s’il vous plaît car je n’y arrive pas

1) 3(2x-4) – (8x-5)

2) (3x-7)(-4x+2) – 2x(3x+1)

3) (7x-2)(5x-1) – (-3x+3)(2x-4)

Sagot :

LOUBIE
1) 6x-12-8x+5=-2x-7

2) -12x^2+6x+28x-14-(6x^2+2x)
= -12x^2+6x+28x-14-6x^2-2x
= -12x^2-6x^2+6x+28x-2x-14
= -18x^2+32x-14

3) 35x^2-7x-10x+2-(-6x^2+12x+6x-12)
= 35x^2-7x-10x+2+6x^2-12x-6x+12
= 35x^2+6x^2-7x-10x-12x-6x+2+12
= 41x^2-35x+14