Answered

Developpe puis réduis les expressions :
A = x (y - 2) + xy
B = 7x (x + 2) - 6x [puissance 2 ]
C = 9x (x [puissance 2 ] - 6 ) + 2x [ puissance 2 ]
D = 2x (3 + 5x) + 8x (7 - x ) + 4 (x - 1)

Sagot :

WINNER123

Bonjour

 

A = xy-2x+xy = 2xy -2x

B = 7x²+14x +36x² = 43x² +14x

C = 9x^3 -54x +2x² = 9x^3 +2x² -54x

D = 6x+10x²+56x-8x²+4x-4 = 2x² +66x -4