Evaluate
22\sqrt{2}\approx 31.112698372
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\frac{220\sqrt{2}}{5\left(\sqrt{2}\right)^{2}}
Rationalize the denominator of \frac{220}{5\sqrt{2}} by multiplying numerator and denominator by \sqrt{2}.
\frac{220\sqrt{2}}{5\times 2}
The square of \sqrt{2} is 2.
22\sqrt{2}
Cancel out 2\times 5 in both numerator and denominator.
Examples
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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