Evaluate
42-6\sqrt{10}\approx 23.026334039
Factor
6 {(7 - \sqrt{10})} = 23.026334039
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3\left(8-2\left(\sqrt{10}-3\right)\right)
Multiply -1 and 2 to get -2.
3\left(8-2\sqrt{10}+6\right)
Use the distributive property to multiply -2 by \sqrt{10}-3.
3\left(14-2\sqrt{10}\right)
Add 8 and 6 to get 14.
42-6\sqrt{10}
Use the distributive property to multiply 3 by 14-2\sqrt{10}.
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