AIDEMOISTP9647
Answered

Développer et réduire les expressions suivantes
A= -7(2x + 4) + 3x -
B = 5+ (3-8y) x 5y - 2y²
C = (5 – 3x) + (-x² + 10) - (4x + 3) - (-2 – 6x²)
D = (2 + 9x)(5 - 4x)
E = (4x - 3)²= ​

Sagot :

MARGESIMPSON1

Bonsoir

A = -7(2x+4)-3x

A = -14x-28+3x

A = -11x-28

B = 5+(3-8y)×5y-2y²

B = 5-25y²-2y²

B = -27y²+5

C = (5-3x)+(-x²+10)-(4x+3)-(-2-6x²)

C = 5-3x-x²+10-4x-3+2+6x²

C = 5x²-7x+ 14

D = (2+9x)(5-4x)

D = 10-8x+45x-36x²

D = -36x²+37x+10

E = (4x-3)²

E = 16x²-24x+9

Bonne soirée.