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12 September, 08:59

Hat are the solutions of the equation x4 - 5x2 - 14 = 0? Use factoring to solve.

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  1. 12 September, 09:01
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    -7 and 2 are factors of - 14, and they make a sum of - 5, therefore:

    (x^2-7) (x^2+2) = 0

    x^=7 or x^=-2

    x=√7 or-√7, x=√2i or x=-√2i
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