Factor
4\sqrt{x^{2}-6}
Evaluate
4\sqrt{x^{2}-6}
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2\left(\sqrt{x^{2}-6}+\sqrt{x^{2}-6}\right)
Factor out 2.
2\sqrt{x^{2}-6}
Consider \sqrt{x^{2}-6}+\sqrt{x^{2}-6}. Factor out \sqrt{x^{2}-6}.
4\sqrt{x^{2}-6}
Rewrite the complete factored expression. Polynomial x^{2}-6 is not factored since it does not have any rational roots.
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