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28 January, 21:51

1) If (x-2) is a factor of x2 + 3ax - 2a, then find the value of a

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  1. 28 January, 22:21
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    x - 2 = > x = 2

    x² + 3ax - 2a

    => 2² + 3 * a * 2 - 2 * a

    => 4 + 6a - 2a

    => 4 + 4a

    => 4 (1 + a)

    ★ 1 + a = 0

    a = - 1
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