Mathématiques

Question

C=2(5x-1)2+10x-2


Factoriser svp!!!!!!!

2 Réponse

  • Bonjour,

    C = 2 (5x - 1)² + 10x - 2

    C = 2 (5x - 1)² + 2 (5x - 1)

    C = 2 (5x - 1) (5x - 1) + 2 (5x - 1) * 1

    C = 2 (5x - 1) ((5x - 1) + 1)

    C = 2 (5x - 1) (5x - 1 + 1)

    C = 2 (5x - 1) * 5x

    C = 10x (5x - 1)

  • Bonjour,

    C=2(5x-1)2+10x-2

    = 2(5x-1)²  + 2( 5x-1)

    = 2( 5x-1) (5x-1)  + 2(5x-1)

    = 2(5x-1) ( 5x-1 +1)

    = (10x -2) ( 5x)

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