Evaluate
-\frac{9}{2}=-4.5
Factor
-\frac{9}{2} = -4\frac{1}{2} = -4.5
Share
Copied to clipboard
\frac{15}{2}+4-\left(6-2\right)^{2}
Multiply 3 and 5 to get 15.
\frac{23}{2}-\left(6-2\right)^{2}
Add \frac{15}{2} and 4 to get \frac{23}{2}.
\frac{23}{2}-4^{2}
Subtract 2 from 6 to get 4.
\frac{23}{2}-16
Calculate 4 to the power of 2 and get 16.
-\frac{9}{2}
Subtract 16 from \frac{23}{2} to get -\frac{9}{2}.
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}