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Sagot :

Bonsoir,
A=4+(x-3)5
= 4 +5x-15
5x -11

B=2x(x+1)-x
2x^2 +2x -x
2x^2 +x

C=-(4-x)2
-(8-2x)
2x -8

D=3 X (5x X 2)+4
3 X 10x +4
30x + 4

E= 3x + 2x^2 +12 +8x
2x^2 + 11x +12

Et de rien

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