Evaluate
-\frac{m}{5}+\frac{5}{m}
Factor
\frac{\left(-m-5\right)\left(m-5\right)}{5m}
Share
Copied to clipboard
\frac{5\times 5}{5m}-\frac{mm}{5m}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of m and 5 is 5m. Multiply \frac{5}{m} times \frac{5}{5}. Multiply \frac{m}{5} times \frac{m}{m}.
\frac{5\times 5-mm}{5m}
Since \frac{5\times 5}{5m} and \frac{mm}{5m} have the same denominator, subtract them by subtracting their numerators.
\frac{25-m^{2}}{5m}
Do the multiplications in 5\times 5-mm.
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}