Evaluate
\sqrt{2}+3\approx 4.414213562
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2\left(\sqrt{2}\right)^{2}-\left(-\sqrt{2}\right)-1
Calculate -\sqrt{2} to the power of 2 and get \left(\sqrt{2}\right)^{2}.
2\times 2-\left(-\sqrt{2}\right)-1
The square of \sqrt{2} is 2.
4-\left(-\sqrt{2}\right)-1
Multiply 2 and 2 to get 4.
4+\sqrt{2}-1
Multiply -1 and -1 to get 1.
3+\sqrt{2}
Subtract 1 from 4 to get 3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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
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