Evaluate
392.5
Factor
\frac{5 \cdot 157}{2} = 392\frac{1}{2} = 392.5
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31.4\times 10+3.14\times 25
Multiply 10 and 3.14 to get 31.4.
314+3.14\times 25
Multiply 31.4 and 10 to get 314.
314+78.5
Multiply 3.14 and 25 to get 78.5.
392.5
Add 314 and 78.5 to get 392.5.
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.
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}