Evaluate
18
Factor
2\times 3^{2}
Quiz
Arithmetic
5 problems similar to:
2 \{ 12 \div ( - 4 ) - [ 6 - 3 ( 2 - 4 \times ( - 2 ) \div 2 ) ] \}
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2\left(-3-\left(6-3\left(2-\frac{4\left(-2\right)}{2}\right)\right)\right)
Divide 12 by -4 to get -3.
2\left(-3-\left(6-3\left(2-4\left(-1\right)\right)\right)\right)
Cancel out 2 and 2.
2\left(-3-\left(6-3\left(2-\left(-4\right)\right)\right)\right)
Multiply 4 and -1 to get -4.
2\left(-3-\left(6-3\left(2+4\right)\right)\right)
The opposite of -4 is 4.
2\left(-3-\left(6-3\times 6\right)\right)
Add 2 and 4 to get 6.
2\left(-3-\left(6-18\right)\right)
Multiply 3 and 6 to get 18.
2\left(-3-\left(-12\right)\right)
Subtract 18 from 6 to get -12.
2\left(-3+12\right)
The opposite of -12 is 12.
2\times 9
Add -3 and 12 to get 9.
18
Multiply 2 and 9 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}