Evaluate
4
Factor
2^{2}
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\frac{1}{\sqrt{10^{-2}\times 6.25}}
To multiply powers of the same base, add their exponents. Add 1 and -3 to get -2.
\frac{1}{\sqrt{\frac{1}{100}\times 6.25}}
Calculate 10 to the power of -2 and get \frac{1}{100}.
\frac{1}{\sqrt{\frac{1}{16}}}
Multiply \frac{1}{100} and 6.25 to get \frac{1}{16}.
\frac{1}{\frac{1}{4}}
Rewrite the square root of the division \frac{1}{16} as the division of square roots \frac{\sqrt{1}}{\sqrt{16}}. Take the square root of both numerator and denominator.
1\times 4
Divide 1 by \frac{1}{4} by multiplying 1 by the reciprocal of \frac{1}{4}.
4
Multiply 1 and 4 to get 4.
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}