Evaluate
12870
Factor
2\times 3^{2}\times 5\times 11\times 13
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\frac{16!}{\left(8!\right)^{2}}
Multiply 8! and 8! to get \left(8!\right)^{2}.
\frac{20922789888000}{\left(8!\right)^{2}}
The factorial of 16 is 20922789888000.
\frac{20922789888000}{40320^{2}}
The factorial of 8 is 40320.
\frac{20922789888000}{1625702400}
Calculate 40320 to the power of 2 and get 1625702400.
12870
Divide 20922789888000 by 1625702400 to get 12870.
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
\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}