Evaluate
\left(n-1\right)\left(4n-1\right)\left(n+2\right)\left(5n+1\right)
Expand
20n^{4}+19n^{3}-42n^{2}+n+2
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20n^{4}+19n^{3}-42n^{2}+n+2
Use the distributive property to multiply 4n^{2}+7n-2 by 5n^{2}-4n-1 and combine like terms.
20n^{4}+19n^{3}-42n^{2}+n+2
Use the distributive property to multiply 4n^{2}+7n-2 by 5n^{2}-4n-1 and combine like terms.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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
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Limits
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