Evaluate
3.1992
Factor
\frac{3 \cdot 31 \cdot 43}{2 \cdot 5 ^ {4}} = 3\frac{249}{1250} = 3.1992
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-0.0503\times 400+1.142\times 20+0.4792
Calculate 20 to the power of 2 and get 400.
-20.12+1.142\times 20+0.4792
Multiply -0.0503 and 400 to get -20.12.
-20.12+22.84+0.4792
Multiply 1.142 and 20 to get 22.84.
2.72+0.4792
Add -20.12 and 22.84 to get 2.72.
3.1992
Add 2.72 and 0.4792 to get 3.1992.
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}