Bonjour sil vous plait aider moi vite fait je dois rendre sa demain a lecole Ses vraiment MERCI DAVANCE

Bonjour,

A = - 3 (4 - 5x) - 10x² + 8x
A = - 12 + 15x - 10x² + 8x
A = - 10x² + 23x - 12

B = (2x - 3) (4 - 5x)
B = 8x - 10x² - 12 + 15x
B = - 10x² + 23x - 12

C = 2x (4 - 5x) + 15x - 12
C = 8x - 10x² + 15x - 12
C = - 10x² + 23x - 12

Bonjour,

A = -3(4 - 5x) - 10x^2 + 8x
A = -3(4 - 5x) - 2x(5x - 4)
A = 3(5x - 4) - 2x(5x - 4)
A = (5x - 4)(3 - 2x)
A = -(4 - 5x)(3 - 2x)
A = (4 - 5x)(2x - 3)
A = (2x - 3)(4 - 5x)
A = B

B = (2x - 3)(4 - 5x)
B = 8x - 10x^2 - 12 + 15x
B = 2x(4 - 5x) + 15x - 12
B = C

C = 2x(4 - 5x) + 15x - 12
C = 2x(4 - 5x) + 3(5x - 4)
C = 2x(4 - 5x) - 3(4 - 5x)
C = (4 - 5x)(2x - 3)
C = (2x - 3)(4 - 5x)
C = B

C = 2x(4 - 5x) + 15x - 12
C = 8x - 10x^2 + 3(5x - 4)
C = -3(4 - 5x) - 10x^2 + 8x
C = A