- #1

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**TL;DR Summary:**I know the answer is (x -2)(x+2)(x^2+1), but I don't know how that is got. I did this... lol

so it put brackets around (x^4 - 3x^2) and went

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

So i thought you could maybe do this.

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

This gives me the (x -2)(x+2) part at least for the difference of squares, but that gives me the answer of (x -2)(x+2) (x^2 -3)

Eeek.. Any help appreciated.