Evaluate
\frac{2\sqrt{5}}{3}\approx 1.490711985
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\frac{10}{3\sqrt{5}}\times 1
Divide 3\sqrt{5} by 3\sqrt{5} to get 1.
\frac{10\sqrt{5}}{3\left(\sqrt{5}\right)^{2}}\times 1
Rationalize the denominator of \frac{10}{3\sqrt{5}} by multiplying numerator and denominator by \sqrt{5}.
\frac{10\sqrt{5}}{3\times 5}\times 1
The square of \sqrt{5} is 5.
\frac{2\sqrt{5}}{3}\times 1
Cancel out 5 in both numerator and denominator.
\frac{2\sqrt{5}}{3}
Express \frac{2\sqrt{5}}{3}\times 1 as a single fraction.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}