Evaluate
4\left(\pi a\right)^{2}
Expand
4\left(\pi a\right)^{2}
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2^{2}\pi ^{2}a^{2}
Expand \left(2\pi a\right)^{2}.
4\pi ^{2}a^{2}
Calculate 2 to the power of 2 and get 4.
2^{2}\pi ^{2}a^{2}
Expand \left(2\pi a\right)^{2}.
4\pi ^{2}a^{2}
Calculate 2 to the power of 2 and get 4.
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
699 * 533
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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