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20 March, 18:18

Solve the equation 9 (x+1) ^4-19 (x+1) ^2+2=0

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  1. 20 March, 19:39
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    9 (x + 1) ^4 - 19 (x + 1) ^2 + 2 = 0

    After expanding and re-factoring, we have:

    (3x + 2) (3x + 4) (x^2 + 2x - 1) = 0

    solutions are x = - 2/3, x = - 4/3, x = - 1 - sqrt (2), x = sqrt (2) - 1
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