Factor
2\left(5x^{2}-4\right)^{2}
Evaluate
2\left(5x^{2}-4\right)^{2}
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2\left(25x^{4}-40x^{2}+16\right)
Factor out 2.
\left(5x^{2}-4\right)^{2}
Consider 25x^{4}-40x^{2}+16. Use the perfect square formula, a^{2}-2ab+b^{2}=\left(a-b\right)^{2}, where a=5x^{2} and b=4.
2\left(5x^{2}-4\right)^{2}
Rewrite the complete factored expression. Polynomial 5x^{2}-4 is not factored since it does not have any rational roots.
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