\left. \begin{array} { l } { \sqrt { 8 } - 7 } \\ { + 4,3 } \end{array} \right.
Evaluate
2\sqrt{2}-2,7\approx 0.128427125
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2\sqrt{2}-7+4,3
Factor 8=2^{2}\times 2. Rewrite the square root of the product \sqrt{2^{2}\times 2} as the product of square roots \sqrt{2^{2}}\sqrt{2}. Take the square root of 2^{2}.
2\sqrt{2}-2,7
Add -7 and 4,3 to get -2,7.
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