Evaluate
\frac{3}{2}=1.5
Factor
\frac{3}{2} = 1\frac{1}{2} = 1.5
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\frac{16+7\left(-4\right)}{\left(-4\right)^{2}-4-20}
Calculate -4 to the power of 2 and get 16.
\frac{16-28}{\left(-4\right)^{2}-4-20}
Multiply 7 and -4 to get -28.
\frac{-12}{\left(-4\right)^{2}-4-20}
Subtract 28 from 16 to get -12.
\frac{-12}{16-4-20}
Calculate -4 to the power of 2 and get 16.
\frac{-12}{12-20}
Subtract 4 from 16 to get 12.
\frac{-12}{-8}
Subtract 20 from 12 to get -8.
\frac{3}{2}
Reduce the fraction \frac{-12}{-8} to lowest terms by extracting and canceling out -4.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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}