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23 March, 09:04

The solution set sqrt3x+16=x+2 is (only 3x+16 is squared)

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  1. 23 March, 09:13
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    Sqrt (3x + 16) = x + 2

    3x + 16 = (x + 2) ^2 = x^2 + 4x + 4

    x^2 + 4x - 3x + 4 - 16 = 0

    x^2 + x - 12 = 0

    (x - 3) (x + 4) = 0

    x - 3 = 0 or x + 4 = 0

    x = 3 or x = - 4.

    Solution set = {-4, 3}
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