Evaluate
\frac{\sqrt{3965}}{5}-52\approx -39.406350807
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\sqrt{\frac{195}{5}+\frac{598}{5}}-52
Convert 39 to fraction \frac{195}{5}.
\sqrt{\frac{195+598}{5}}-52
Since \frac{195}{5} and \frac{598}{5} have the same denominator, add them by adding their numerators.
\sqrt{\frac{793}{5}}-52
Add 195 and 598 to get 793.
\frac{\sqrt{793}}{\sqrt{5}}-52
Rewrite the square root of the division \sqrt{\frac{793}{5}} as the division of square roots \frac{\sqrt{793}}{\sqrt{5}}.
\frac{\sqrt{793}\sqrt{5}}{\left(\sqrt{5}\right)^{2}}-52
Rationalize the denominator of \frac{\sqrt{793}}{\sqrt{5}} by multiplying numerator and denominator by \sqrt{5}.
\frac{\sqrt{793}\sqrt{5}}{5}-52
The square of \sqrt{5} is 5.
\frac{\sqrt{3965}}{5}-52
To multiply \sqrt{793} and \sqrt{5}, multiply the numbers under the square root.
\frac{\sqrt{3965}}{5}-\frac{52\times 5}{5}
To add or subtract expressions, expand them to make their denominators the same. Multiply 52 times \frac{5}{5}.
\frac{\sqrt{3965}-52\times 5}{5}
Since \frac{\sqrt{3965}}{5} and \frac{52\times 5}{5} have the same denominator, subtract them by subtracting their numerators.
\frac{\sqrt{3965}-260}{5}
Do the multiplications in \sqrt{3965}-52\times 5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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}