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If x=2 is a root of …

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If x=2 is a root of the polynomial f(x)=2x³-3x+7a,find the value of a

    • Posted by Aman Chaurasiya 4 years, 10 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Yogita Ingle 4 years, 10 months ago

    f(x)=2x³-3x+7a

    x = 2 is a root of the polynomial

    2x3 - 3x + 7a  =0

    2(2)3 - 3(2) + 7a = 0

    2(8) - 6 + 7a = 0

    16- 6 + 7a = 0

    10 + 7a = 0

    7a = -10

    a = -10/7

    0Thank You

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