\frac { 2,1 \cdot 10 ^ { 2 } } { 3 \cdot 10 ^ { - 1 } } =
Evaluate
700
Factor
7\times 2^{2}\times 5^{2}
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\frac{2,1\times 10^{3}}{3}
To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent.
\frac{2,1\times 1000}{3}
Calculate 10 to the power of 3 and get 1000.
\frac{2100}{3}
Multiply 2,1 and 1000 to get 2100.
700
Divide 2100 by 3 to get 700.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}