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X square + 10 X + …

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X square + 10 X + 21

    • Posted by Vishnu Saini 8 years, 6 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Amar Kumar 8 years, 6 months ago

    x2+10x+21

    =x2+7x+3x+21

    =x(x+7)+3(x+7)

    =(x+7)(x+3)

     

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