Factoring Question!?

I am not sure about the process in which to factor this equation. I have been working on it but haven't succeded.

x^4 - 13x^2 +36

Thanks!

2007-09-02 09:02:26 · 1 answers · asked by footballgrl 3 in Science & Mathematics ➔ Mathematics

x^4 - 13x^2 + 39 = (x^2 - 4)(x^2 - 9) = (x - 2)(x + 2)(x - 3)(x + 3).

2007-09-02 09:23:58 · answer #1 · answered by Tony 7 · 0⤊ 0⤋

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