D= (5x – 3)(8 - x) Calculer svp

Bonsoir,

= 40x -5x² -24 +3x

= -5x² +43x -24

Bonsoir,

Simplifier :

D = (5x-3)(8-x)

D = 5x×8-5x×x-3×8-3×(-x)

D = 40x-5x×x-3×8-3×(-x)

D = 40x-5x²-3×8-3×(-x)

D = 40x+5x²-24-3×(-x)

D = 40x+5x²-24+3x

D = 43x-5x²-24

↳ Loi commutative

D = -5x²+43x-24

Bonne soirée.