Evaluate
-\frac{\sqrt{7}}{2}+2\approx 0.677124344
Factor
\frac{4 - \sqrt{7}}{2} = 0.6771243444677046
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\frac{16-\sqrt{112}}{8}
Subtract 144 from 256 to get 112.
\frac{16-4\sqrt{7}}{8}
Factor 112=4^{2}\times 7. Rewrite the square root of the product \sqrt{4^{2}\times 7} as the product of square roots \sqrt{4^{2}}\sqrt{7}. Take the square root of 4^{2}.
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