Evaluate
68
Factor
2^{2}\times 17
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16+\left(2\sqrt{13}\right)^{2}
Calculate 4 to the power of 2 and get 16.
16+2^{2}\left(\sqrt{13}\right)^{2}
Expand \left(2\sqrt{13}\right)^{2}.
16+4\left(\sqrt{13}\right)^{2}
Calculate 2 to the power of 2 and get 4.
16+4\times 13
The square of \sqrt{13} is 13.
16+52
Multiply 4 and 13 to get 52.
68
Add 16 and 52 to get 68.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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