Réponse:
Exercice 09:
A=3(x+6)
=3x+18
B=5(6-y)
=30-5y
C=-7(2z-3)
=-14z+21
D=-8(-5-3y+2x)
=40+24y-16x
Exercice 11:
A=11+2(x-6)
=11+2x-12
=2x-1
B=-3(2y-4)-2y
=-6y+12-2y
=-8y+12
C=7-4(8-2a)+a
=7-32+8a+a
=-25+9a
D=-15-9(-5+3b)
=15+45-27b
=60-27b
E=-5(6-3z)-9+z
=-30+15z-9+z
=-39+16z
F=12x-4(6-3x)
=12x-24+12x
=24x-24
G=5t²+3(2t-3)-2t(t-5)
=5t²+6t-9-2t²+10t
=3t²+16t-9
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Réponse:
Exercice 09:
A=3(x+6)
=3x+18
B=5(6-y)
=30-5y
C=-7(2z-3)
=-14z+21
D=-8(-5-3y+2x)
=40+24y-16x
Exercice 11:
A=11+2(x-6)
=11+2x-12
=2x-1
B=-3(2y-4)-2y
=-6y+12-2y
=-8y+12
C=7-4(8-2a)+a
=7-32+8a+a
=-25+9a
D=-15-9(-5+3b)
=15+45-27b
=60-27b
E=-5(6-3z)-9+z
=-30+15z-9+z
=-39+16z
F=12x-4(6-3x)
=12x-24+12x
=24x-24
G=5t²+3(2t-3)-2t(t-5)
=5t²+6t-9-2t²+10t
=3t²+16t-9