Evaluate
\frac{15}{4}=3.75
Factor
\frac{3 \cdot 5}{2 ^ {2}} = 3\frac{3}{4} = 3.75
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\sqrt{\frac{81}{16}+9}
Calculate \frac{9}{4} to the power of 2 and get \frac{81}{16}.
\sqrt{\frac{81}{16}+\frac{144}{16}}
Convert 9 to fraction \frac{144}{16}.
\sqrt{\frac{81+144}{16}}
Since \frac{81}{16} and \frac{144}{16} have the same denominator, add them by adding their numerators.
\sqrt{\frac{225}{16}}
Add 81 and 144 to get 225.
\frac{15}{4}
Rewrite the square root of the division \frac{225}{16} as the division of square roots \frac{\sqrt{225}}{\sqrt{16}}. Take the square root of both numerator and denominator.
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}