A = 2x(5x – 8) + 5x B = (7x - 3)(3x + 4) + 6x(2x + 5) C = (6x + 5)(2x + 7) + (2x + 5)(7x - 4)

Réponse:

A=2 x (5x-8) +5x

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

A= 7x - 3x

A= 4x

B= (7x -3)(3x +4)+6x(2x +5)

B= (4x)(7x)+6x(7x)

B= 18x +6x

B= 24x

C= (6x+5)(2x+7)+(2x+5)(7x-4)

C=(11x)(9x)+(7x)(3x)

C= 20x+10x

C=30x

Bonjour,

Simplifier :

A = 2x(5x-8)+5x

A = 10x²-16x+5x

A = 10x²-11x

B = (7x-3)(3x+4)+6x(2x+5)

B = 21x²+28x-9x-12+6x(2x+5)

B = 21x²+28x-9x-12+12x²+30x

B = 33x²+28x-9x-12+30x

B = 33x²+49x-12

C = (6x+5)(2x+7)+(2x+5)(7x-4)+(2x+5)(7x-4)

C = 12x²+42x+10x+35+(2x+5)(7x-4)

C = 12x²+42x+10x+35+14x²-8x+35x-20

C = 26x²+42x+10x+35-8x+35x-20

C = 26x²+79x+35-20

C = 26x²+79x+15

Bonne journée.