Evaluate
4x\left(20-x\right)\left(25-x\right)
Expand
4x^{3}-180x^{2}+2000x
Graph
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\left(2000-100x-80x+4x^{2}\right)x
Apply the distributive property by multiplying each term of 50-2x by each term of 40-2x.
\left(2000-180x+4x^{2}\right)x
Combine -100x and -80x to get -180x.
2000x-180x^{2}+4x^{3}
Use the distributive property to multiply 2000-180x+4x^{2} by x.
\left(2000-100x-80x+4x^{2}\right)x
Apply the distributive property by multiplying each term of 50-2x by each term of 40-2x.
\left(2000-180x+4x^{2}\right)x
Combine -100x and -80x to get -180x.
2000x-180x^{2}+4x^{3}
Use the distributive property to multiply 2000-180x+4x^{2} by x.
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
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}