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18 December, 15:47

Solve the equation algebraically. 9^x-2 = (1/27) ^x+4

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  1. 18 December, 16:10
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    (3^2) ^x-2 = (1/3^3) ^x+4

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

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

    3^2x-4 = 3^-3x-12

    2x-4 = - 3x-12

    x = - 8/5

    x = - 1 3/4, x = - 1.6
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