Evaluate
0.72
Factor
\frac{2 \cdot 3 ^ {2}}{5 ^ {2}} = 0.72
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0.288+1.728+9\times 0.216-1.8^{2}
Multiply 4 and 0.432 to get 1.728.
2.016+9\times 0.216-1.8^{2}
Add 0.288 and 1.728 to get 2.016.
2.016+1.944-1.8^{2}
Multiply 9 and 0.216 to get 1.944.
3.96-1.8^{2}
Add 2.016 and 1.944 to get 3.96.
3.96-3.24
Calculate 1.8 to the power of 2 and get 3.24.
0.72
Subtract 3.24 from 3.96 to get 0.72.
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}