Evaluate
m+3
Factor
m+3
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\frac{m^{2}-9}{m-3}
Since \frac{m^{2}}{m-3} and \frac{9}{m-3} have the same denominator, subtract them by subtracting their numerators.
\frac{\left(m-3\right)\left(m+3\right)}{m-3}
Factor the expressions that are not already factored in \frac{m^{2}-9}{m-3}.
m+3
Cancel out m-3 in both numerator and denominator.
Examples
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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
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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