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Answered

Bonjour, pouvez-vous m'aider à développer et réduire ces expressions littérals.

A= (2x+3) (5x-7)
B= (2x+1) (7x-3) -6 (x-2)
C= (x+6)² + (2x-5) (3-4x)
D= 5(x-1) -4 (x+3) -10
E= 2x (3x+4) + (x+2) (3x+5)
F= 3 (5-2x) + (2x-3) (4x-5)

Merci beaucoup

Sagot :

Salut !

A = (2x+3)(5x-7) = 10x²-14x+15x-21 = 10x²+x-21

B = (2x+1)(7x-3)-6(x-2) = 14x²-6x+7x-3-6x+12 = 14x²-5x+9

C = (x+6)²+(2x-5)(3-4x) = x²+12x+36+6x-8x²-15+20x = -7x²+38x+21

D = 5(x-1)-4(x+3)-10 = 5x-5-4x-12-10 = x-27

E = 2x(3x+4)+(x+2)(3x+5) = 6x²+8x+3x²+5x+6x+10 = 9x²+19x+10

F = 3(5-2x)+(2x-3)(4x-5) = 15-6x+8x²-10x-12x+15 = 8x²-28x+30

                                     

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