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If x-a is a factor of …

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If x-a is a factor of x×x+2x+1 then find a

    • Posted by Rahul Rahul 5 years, 11 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Yogita Ingle 5 years, 11 months ago

    Put x = a

    x×x+2x+1 = 0

    a × a + 2 (a) + 1 = 0

    a2 + 2a + 1= 0

    (a + 1) (a + 1) = 0

    a + 1 = 0

    a = -1

     

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