Mathématiques

Question

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E= (4x-1)²-(5-x)²
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F= 3x(2x-1)²+7(x+4)²
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H=(x-3)2x-(x+1)²
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1 Réponse

  • E=16x²+1-8x-(25+x²-10x)
      =16x²+1-8x-25-x²+10x
      =15x²+2x-24

    F=6x²-3x(2x-1)+7x+28(x+4)
      =6x²-6x²+3x+7x+28x+112

    H=2x²-6x-(x²+1²+2x)
       =x²-8x-1

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