Réduire : A.7x + 3x(2x - 5) B.13x + (3x – 8) (4x + 5) C.3(x - 2) – 5(4 – 2x) D.10x – (4x + 11)(2x - 3) E.(8x – 5) – (4x – 7)

Bonsoir.

Politesse !

Réduire :

A = 7x+3x(2x-5)

A = 7x+6x²-15x

A = -8x+6x²

B = 13x+(3x-8)(4x+5)

B = 13x+12x²+15x-32x-40

B = 13x+12x²-17x-40

B = -4x+12x²-40

B = 12x²-4x-40

C = 3(x-2)-5(4-2x)

C = 3x-6-5(4-2x)

C = 3x-6-20+10x

C = 3x-26+10x

C = 13x-26

D = 10x-(4x+11)(2x-3)

D = 10x-(8x²-12x+22x-33)

D = 10x-(8x²+10x-33)

D = 10x-8x²-10x-(-33)

D = 10x-8x²-10x+33

D = -8x²+33

E = (8x-5)-(4x-7)

E = 8x-5-4x-(-7)

E = 8x-5-4x+7

E = 4x-5+7

E = 4x+2

Bonne soirée.