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Sagot :

CARYS

A= 3b+5(a+b)-4(2b-a)

A = 3b + 5a + 5b - 8b + 4a

A = 9a

 

B= (3a-7)(5-2a)

B = 15a - 6a - 35 + 14a

B = 23a - 35

Rebonsoir

A = 3b+5(a+b)-4(2b-a)

A = 3b+5a+5b-8b+4a

A = 9a +8b -8b

A = 9a

B = (3a-7)(5-2a)

B = 15a-6a²-35+14a

B = -6a²+29a-35

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