Bonsoir,
2(5+a)=10+2a
a(7-a)=7a-a²
4a(2a+3)=8a²+12a
5(3a-4)=15a-20
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Bonsoir,
2(5+a)=10+2a
a(7-a)=7a-a²
4a(2a+3)=8a²+12a
5(3a-4)=15a-20