Evaluate
\frac{x+6}{x-6}
Expand
\frac{x+6}{x-6}
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\frac{\left(x-6\right)\left(x+6\right)}{x^{2}-12x+36}
Divide x-6 by \frac{x^{2}-12x+36}{x+6} by multiplying x-6 by the reciprocal of \frac{x^{2}-12x+36}{x+6}.
\frac{\left(x-6\right)\left(x+6\right)}{\left(x-6\right)^{2}}
Factor the expressions that are not already factored.
\frac{x+6}{x-6}
Cancel out x-6 in both numerator and denominator.
\frac{\left(x-6\right)\left(x+6\right)}{x^{2}-12x+36}
Divide x-6 by \frac{x^{2}-12x+36}{x+6} by multiplying x-6 by the reciprocal of \frac{x^{2}-12x+36}{x+6}.
\frac{\left(x-6\right)\left(x+6\right)}{\left(x-6\right)^{2}}
Factor the expressions that are not already factored.
\frac{x+6}{x-6}
Cancel out x-6 in both numerator and denominator.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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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
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