0,4 \sqrt { 400 } - \frac { 1 } { 3 } \sqrt { 81 } =
Evaluate
5
Factor
5
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0,4\times 20-\frac{1}{3}\sqrt{81}
Calculate the square root of 400 and get 20.
8-\frac{1}{3}\sqrt{81}
Multiply 0,4 and 20 to get 8.
8-\frac{1}{3}\times 9
Calculate the square root of 81 and get 9.
8+\frac{-9}{3}
Express -\frac{1}{3}\times 9 as a single fraction.
8-3
Divide -9 by 3 to get -3.
5
Subtract 3 from 8 to get 5.
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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699 * 533
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.
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}