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13 February, 20:25

What are the solutions of the equation x4 - 5x2 - 36 = 0? use factoring to solve.

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  1. 13 February, 22:19
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    X^4 - 5x^2 - 36 = 0

    (x^2 - 9) (x^2 + 4) = 0

    (x-3) (x+3) (x-2) (x+2) = 0

    x = - 3, - 2, 2, 3
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