Exercice 2 1°) Développer et réduire les expressions suivantes :
A = 5(3y – 5) + (- 2y - 8) -(-6y + 7)
B = (-5a - 3) (2a + 8)
2°) Factoriser:
C = 25x3 - 15x + 5x
A = 5(3y – 5) + (- 2y - 8) -(-6y + 7)
B = (-5a - 3) (2a + 8)
2°) Factoriser:
C = 25x3 - 15x + 5x
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