Mathématiques

Question

Factoriser (3y-5)(2y+1)+(y-7)(15-9y)

1 Réponse

  • Factoriser (3y-5)(2y+1)+(y-7)(15-9y)
    =(3y-5)(2y+1)+3(y-7)(5-3y)
    =(3y-5)(2y+1-3(y-7))
    =(3y-5)(-y+22)

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