Evaluate
-37.5
Factor
-37.5
Share
Copied to clipboard
2\times 20.25-18\times 4.5+3
Calculate 4.5 to the power of 2 and get 20.25.
40.5-18\times 4.5+3
Multiply 2 and 20.25 to get 40.5.
40.5-81+3
Multiply 18 and 4.5 to get 81.
-40.5+3
Subtract 81 from 40.5 to get -40.5.
-37.5
Add -40.5 and 3 to get -37.5.
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}