Evaluate
18
Factor
2\times 3^{2}
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\frac{12}{4}+4\left(8-2\right)-3^{2}
Subtract 8 from 12 to get 4.
3+4\left(8-2\right)-3^{2}
Divide 12 by 4 to get 3.
3+4\times 6-3^{2}
Subtract 2 from 8 to get 6.
3+24-3^{2}
Multiply 4 and 6 to get 24.
27-3^{2}
Add 3 and 24 to get 27.
27-9
Calculate 3 to the power of 2 and get 9.
18
Subtract 9 from 27 to get 18.
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}