Evaluate
-40
Factor
-40
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\left(-10\right)^{2}\left(-\frac{2}{5}\right)
Cancel out 5 and 5.
100\left(-\frac{2}{5}\right)
Calculate -10 to the power of 2 and get 100.
\frac{100\left(-2\right)}{5}
Express 100\left(-\frac{2}{5}\right) as a single fraction.
\frac{-200}{5}
Multiply 100 and -2 to get -200.
-40
Divide -200 by 5 to get -40.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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.
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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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