4x^4-4x^2+1. How do I simplify this one? What really throws me is the whole +1 thing.
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Originally Posted by quikwerk 4x^4-4x^2+1. How do I simplify this one? What really throws me is the whole +1 thing. Hi quikwerk, $\displaystyle 4x^4-4x^2+1$ You might see if better if we Let $\displaystyle u=x^2$ $\displaystyle 4u^2-4u+1=(2u-1)(2u-1) \Longrightarrow (2x^2-1)(2x^2-1)=(2x-1)^2$
thanks! That really helps! I think I see how that question works now!
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