Evaluate
\frac{\left(x-1\right)\left(x+2\right)}{\left(x-5\right)\left(x-2\right)}
Expand
\frac{x^{2}+x-2}{\left(x-5\right)\left(x-2\right)}
Graph
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\frac{\frac{\left(x+2\right)\left(x-2\right)}{x-2}+\frac{3}{x-2}}{x-6+\frac{7}{x+2}}
To add or subtract expressions, expand them to make their denominators the same. Multiply x+2 times \frac{x-2}{x-2}.
\frac{\frac{\left(x+2\right)\left(x-2\right)+3}{x-2}}{x-6+\frac{7}{x+2}}
Since \frac{\left(x+2\right)\left(x-2\right)}{x-2} and \frac{3}{x-2} have the same denominator, add them by adding their numerators.
\frac{\frac{x^{2}-2x+2x-4+3}{x-2}}{x-6+\frac{7}{x+2}}
Do the multiplications in \left(x+2\right)\left(x-2\right)+3.
\frac{\frac{x^{2}-1}{x-2}}{x-6+\frac{7}{x+2}}
Combine like terms in x^{2}-2x+2x-4+3.
\frac{\frac{x^{2}-1}{x-2}}{\frac{\left(x-6\right)\left(x+2\right)}{x+2}+\frac{7}{x+2}}
To add or subtract expressions, expand them to make their denominators the same. Multiply x-6 times \frac{x+2}{x+2}.
\frac{\frac{x^{2}-1}{x-2}}{\frac{\left(x-6\right)\left(x+2\right)+7}{x+2}}
Since \frac{\left(x-6\right)\left(x+2\right)}{x+2} and \frac{7}{x+2} have the same denominator, add them by adding their numerators.
\frac{\frac{x^{2}-1}{x-2}}{\frac{x^{2}+2x-6x-12+7}{x+2}}
Do the multiplications in \left(x-6\right)\left(x+2\right)+7.
\frac{\frac{x^{2}-1}{x-2}}{\frac{x^{2}-4x-5}{x+2}}
Combine like terms in x^{2}+2x-6x-12+7.
\frac{\left(x^{2}-1\right)\left(x+2\right)}{\left(x-2\right)\left(x^{2}-4x-5\right)}
Divide \frac{x^{2}-1}{x-2} by \frac{x^{2}-4x-5}{x+2} by multiplying \frac{x^{2}-1}{x-2} by the reciprocal of \frac{x^{2}-4x-5}{x+2}.
\frac{\left(x-1\right)\left(x+1\right)\left(x+2\right)}{\left(x-5\right)\left(x-2\right)\left(x+1\right)}
Factor the expressions that are not already factored.
\frac{\left(x-1\right)\left(x+2\right)}{\left(x-5\right)\left(x-2\right)}
Cancel out x+1 in both numerator and denominator.
\frac{x^{2}+x-2}{x^{2}-7x+10}
Expand the expression.
\frac{\frac{\left(x+2\right)\left(x-2\right)}{x-2}+\frac{3}{x-2}}{x-6+\frac{7}{x+2}}
To add or subtract expressions, expand them to make their denominators the same. Multiply x+2 times \frac{x-2}{x-2}.
\frac{\frac{\left(x+2\right)\left(x-2\right)+3}{x-2}}{x-6+\frac{7}{x+2}}
Since \frac{\left(x+2\right)\left(x-2\right)}{x-2} and \frac{3}{x-2} have the same denominator, add them by adding their numerators.
\frac{\frac{x^{2}-2x+2x-4+3}{x-2}}{x-6+\frac{7}{x+2}}
Do the multiplications in \left(x+2\right)\left(x-2\right)+3.
\frac{\frac{x^{2}-1}{x-2}}{x-6+\frac{7}{x+2}}
Combine like terms in x^{2}-2x+2x-4+3.
\frac{\frac{x^{2}-1}{x-2}}{\frac{\left(x-6\right)\left(x+2\right)}{x+2}+\frac{7}{x+2}}
To add or subtract expressions, expand them to make their denominators the same. Multiply x-6 times \frac{x+2}{x+2}.
\frac{\frac{x^{2}-1}{x-2}}{\frac{\left(x-6\right)\left(x+2\right)+7}{x+2}}
Since \frac{\left(x-6\right)\left(x+2\right)}{x+2} and \frac{7}{x+2} have the same denominator, add them by adding their numerators.
\frac{\frac{x^{2}-1}{x-2}}{\frac{x^{2}+2x-6x-12+7}{x+2}}
Do the multiplications in \left(x-6\right)\left(x+2\right)+7.
\frac{\frac{x^{2}-1}{x-2}}{\frac{x^{2}-4x-5}{x+2}}
Combine like terms in x^{2}+2x-6x-12+7.
\frac{\left(x^{2}-1\right)\left(x+2\right)}{\left(x-2\right)\left(x^{2}-4x-5\right)}
Divide \frac{x^{2}-1}{x-2} by \frac{x^{2}-4x-5}{x+2} by multiplying \frac{x^{2}-1}{x-2} by the reciprocal of \frac{x^{2}-4x-5}{x+2}.
\frac{\left(x-1\right)\left(x+1\right)\left(x+2\right)}{\left(x-5\right)\left(x-2\right)\left(x+1\right)}
Factor the expressions that are not already factored.
\frac{\left(x-1\right)\left(x+2\right)}{\left(x-5\right)\left(x-2\right)}
Cancel out x+1 in both numerator and denominator.
\frac{x^{2}+x-2}{x^{2}-7x+10}
Expand the expression.
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}