Evaluate
\frac{1}{7}\approx 0.142857143
Factor
\frac{1}{7} = 0.14285714285714285
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\frac{5\left(128-\left(154-31\right)\right)}{634-459}
Cancel out 8 in both numerator and denominator.
\frac{5\left(128-123\right)}{634-459}
Subtract 31 from 154 to get 123.
\frac{5\times 5}{634-459}
Subtract 123 from 128 to get 5.
\frac{25}{634-459}
Multiply 5 and 5 to get 25.
\frac{25}{175}
Subtract 459 from 634 to get 175.
\frac{1}{7}
Reduce the fraction \frac{25}{175} to lowest terms by extracting and canceling out 25.
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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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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}