Evaluate
\sqrt{5}\approx 2.236067977
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3\sqrt{5}-\sqrt{2}\sqrt{2}\sqrt{5}
Factor 10=2\times 5. Rewrite the square root of the product \sqrt{2\times 5} as the product of square roots \sqrt{2}\sqrt{5}.
3\sqrt{5}-2\sqrt{5}
Multiply \sqrt{2} and \sqrt{2} to get 2.
\sqrt{5}
Combine 3\sqrt{5} and -2\sqrt{5} to get \sqrt{5}.
Examples
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y = 3x + 4
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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