Bonjour,
Réduire les expressions:
A= 3x+24+28x+8= 31x+32
B= 5x-5-14x-21x²= -21x²-9x-5
C= 8x-10x²-x+7= -10x²+7x+7
D= 3-8x-20x+35= -28x+38
E= 21-14x-8x²+4x= -8x²-10x+21
F= 7x-10+45x+63x-7= 115x-17
