Evaluate
5-8\sqrt{70}\approx -61.932802123
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\left(\sqrt{5}\right)^{2}-8\sqrt{5}\sqrt{14}
Use the distributive property to multiply \sqrt{5} by \sqrt{5}-8\sqrt{14}.
5-8\sqrt{5}\sqrt{14}
The square of \sqrt{5} is 5.
5-8\sqrt{70}
To multiply \sqrt{5} and \sqrt{14}, multiply the numbers under the square root.
Examples
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