Evaluate
4\sqrt{2}\approx 5.656854249
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\frac{8\sqrt{2}}{\left(\sqrt{2}\right)^{2}}
Rationalize the denominator of \frac{8}{\sqrt{2}} by multiplying numerator and denominator by \sqrt{2}.
\frac{8\sqrt{2}}{2}
The square of \sqrt{2} is 2.
4\sqrt{2}
Divide 8\sqrt{2} by 2 to get 4\sqrt{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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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