J'ai besoin d'aide svp
A=(2x-5)(3-x)=
B=(-3x+4)(x+2)+(5x+1)(x-2)=
C=(2x+5)(-x+2)-(x-3)(-3x+4)=
Merci d'y répondre
A=(2x-5)(3-x)=
B=(-3x+4)(x+2)+(5x+1)(x-2)=
C=(2x+5)(-x+2)-(x-3)(-3x+4)=
Merci d'y répondre
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Verified answer
A = (2x - 5) (3 - x)A = 6x - 2x² - 15 + 5x
A = - 2x² + 11x - 15
B = (- 3x + 4) (x + 2) + (5x + 1) (x - 2)
B = - 3x² - 6x + 4x + 8 + 5x² - 10x + x - 2
B = - 3x² + 5x² - 6x - 10x + 4x + x + 8 - 2
B = 2x² - 11x + 6
C = (2x + 5) (- x + 2) - (x - 3) (- 3x + 4)
C = - 2x² + 4x - 5x - 10 - (- 3x² + 4x + 9x - 12)
C = - 2x² + 4x - 5x - 10 + 3x² - 4x - 9x + 12
C = - 2x² + 3x² + 4x - 4x - 5x - 9x - 10 + 12
C = x² - 14x + 2