Evaluate
\frac{1256}{139}\approx 9.035971223
Factor
\frac{157 \cdot 2 ^ {3}}{139} = 9\frac{5}{139} = 9.035971223021583
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\frac{25\times 3.14\times 8}{69.5}
Multiply 5 and 5 to get 25.
\frac{78.5\times 8}{69.5}
Multiply 25 and 3.14 to get 78.5.
\frac{628}{69.5}
Multiply 78.5 and 8 to get 628.
\frac{6280}{695}
Expand \frac{628}{69.5} by multiplying both numerator and the denominator by 10.
\frac{1256}{139}
Reduce the fraction \frac{6280}{695} to lowest terms by extracting and canceling out 5.
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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
\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}