bonsoir
A= 3x+7+5x²+4x-6=
5x² +7x+1
B =2+5x+3×4x+9=
2+5x+12x+9=
17x+11
C=2x-(3x+6)+(5x²-6x+12)=
2x-3x-6+5x²-6x+12=
5x²-7x+6
D=4(5x+3)=
20x+12
E= 2(3+6x)+4x(x+7)=
6+12x+4x²+28x=
4x²+40x+6
mercredi =
1113-152-143-164-189-157-163=145
moyenne =
152+143+145+164+189+157+163=1113
et 1113÷7=159
pourcentage le week end
1113=100%
157+163=320
320×100÷1113=28.75%
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bonsoir
A= 3x+7+5x²+4x-6=
5x² +7x+1
B =2+5x+3×4x+9=
2+5x+12x+9=
17x+11
C=2x-(3x+6)+(5x²-6x+12)=
2x-3x-6+5x²-6x+12=
5x²-7x+6
D=4(5x+3)=
20x+12
E= 2(3+6x)+4x(x+7)=
6+12x+4x²+28x=
4x²+40x+6
mercredi =
1113-152-143-164-189-157-163=145
moyenne =
152+143+145+164+189+157+163=1113
et 1113÷7=159
pourcentage le week end
1113=100%
157+163=320
320×100÷1113=28.75%