( 2,1 \times 10 ^ { - 2 } ) - ( 2,8 \times 10 ^ { - 5 } )
Evaluate
0,020972
Factor
\frac{107 \cdot 7 ^ {2}}{2 ^ {4} \cdot 5 ^ {6}} = 0.020972
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2,1\times \frac{1}{100}-2,8\times 10^{-5}
Calculate 10 to the power of -2 and get \frac{1}{100}.
\frac{21}{1000}-2,8\times 10^{-5}
Multiply 2,1 and \frac{1}{100} to get \frac{21}{1000}.
\frac{21}{1000}-2,8\times \frac{1}{100000}
Calculate 10 to the power of -5 and get \frac{1}{100000}.
\frac{21}{1000}-\frac{7}{250000}
Multiply 2,8 and \frac{1}{100000} to get \frac{7}{250000}.
\frac{5243}{250000}
Subtract \frac{7}{250000} from \frac{21}{1000} to get \frac{5243}{250000}.
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}