Evaluate
28
Factor
2^{2}\times 7
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\frac{40320}{2!\times 6!}
The factorial of 8 is 40320.
\frac{40320}{2\times 6!}
The factorial of 2 is 2.
\frac{40320}{2\times 720}
The factorial of 6 is 720.
\frac{40320}{1440}
Multiply 2 and 720 to get 1440.
28
Divide 40320 by 1440 to get 28.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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