Evaluate
4\left(x-25\right)\left(x-21\right)
Expand
4x^{2}-184x+2100
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2100-100x-84x+4x^{2}
Apply the distributive property by multiplying each term of 50-2x by each term of 42-2x.
2100-184x+4x^{2}
Combine -100x and -84x to get -184x.
2100-100x-84x+4x^{2}
Apply the distributive property by multiplying each term of 50-2x by each term of 42-2x.
2100-184x+4x^{2}
Combine -100x and -84x to get -184x.
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
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\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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