Evaluate
-2
Factor
-2
Quiz
Polynomial
5 problems similar to:
\frac { 2 - \frac { 2 } { a - 2 } } { \frac { 1 } { a - 2 } - 1 }
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\frac{\frac{2\left(a-2\right)}{a-2}-\frac{2}{a-2}}{\frac{1}{a-2}-1}
To add or subtract expressions, expand them to make their denominators the same. Multiply 2 times \frac{a-2}{a-2}.
\frac{\frac{2\left(a-2\right)-2}{a-2}}{\frac{1}{a-2}-1}
Since \frac{2\left(a-2\right)}{a-2} and \frac{2}{a-2} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{2a-4-2}{a-2}}{\frac{1}{a-2}-1}
Do the multiplications in 2\left(a-2\right)-2.
\frac{\frac{2a-6}{a-2}}{\frac{1}{a-2}-1}
Combine like terms in 2a-4-2.
\frac{\frac{2a-6}{a-2}}{\frac{1}{a-2}-\frac{a-2}{a-2}}
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{a-2}{a-2}.
\frac{\frac{2a-6}{a-2}}{\frac{1-\left(a-2\right)}{a-2}}
Since \frac{1}{a-2} and \frac{a-2}{a-2} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{2a-6}{a-2}}{\frac{1-a+2}{a-2}}
Do the multiplications in 1-\left(a-2\right).
\frac{\frac{2a-6}{a-2}}{\frac{3-a}{a-2}}
Combine like terms in 1-a+2.
\frac{\left(2a-6\right)\left(a-2\right)}{\left(a-2\right)\left(3-a\right)}
Divide \frac{2a-6}{a-2} by \frac{3-a}{a-2} by multiplying \frac{2a-6}{a-2} by the reciprocal of \frac{3-a}{a-2}.
\frac{2a-6}{-a+3}
Cancel out a-2 in both numerator and denominator.
\frac{2\left(a-3\right)}{-a+3}
Factor the expressions that are not already factored.
\frac{-2\left(-a+3\right)}{-a+3}
Extract the negative sign in -3+a.
-2
Cancel out -a+3 in both numerator and denominator.
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}