Evaluate
\frac{81}{256}=0.31640625
Factor
\frac{3 ^ {4}}{2 ^ {8}} = 0.31640625
Share
Copied to clipboard
\frac{3\times 9}{64}\times \frac{5}{8}+\frac{27}{64\times 8}
Express 3\times \frac{9}{64} as a single fraction.
\frac{27}{64}\times \frac{5}{8}+\frac{27}{64\times 8}
Multiply 3 and 9 to get 27.
\frac{27\times 5}{64\times 8}+\frac{27}{64\times 8}
Multiply \frac{27}{64} times \frac{5}{8} by multiplying numerator times numerator and denominator times denominator.
\frac{135}{512}+\frac{27}{64\times 8}
Do the multiplications in the fraction \frac{27\times 5}{64\times 8}.
\frac{135}{512}+\frac{27}{512}
Multiply 64 and 8 to get 512.
\frac{135+27}{512}
Since \frac{135}{512} and \frac{27}{512} have the same denominator, add them by adding their numerators.
\frac{162}{512}
Add 135 and 27 to get 162.
\frac{81}{256}
Reduce the fraction \frac{162}{512} to lowest terms by extracting and canceling out 2.
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}