Evaluate
8
Factor
2^{3}
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0.7\times 9-0.5\left(-3\right)+0.2
Calculate -3 to the power of 2 and get 9.
6.3-0.5\left(-3\right)+0.2
Multiply 0.7 and 9 to get 6.3.
6.3-\left(-1.5\right)+0.2
Multiply 0.5 and -3 to get -1.5.
6.3+1.5+0.2
The opposite of -1.5 is 1.5.
7.8+0.2
Add 6.3 and 1.5 to get 7.8.
8
Add 7.8 and 0.2 to get 8.
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}