Solve for x
x\in [-3,2)
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\frac{8}{2-x}\geq \frac{x}{x-2}+\frac{x-2}{x-2}
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x-2}{x-2}.
\frac{8}{2-x}\geq \frac{x+x-2}{x-2}
Since \frac{x}{x-2} and \frac{x-2}{x-2} have the same denominator, add them by adding their numerators.
\frac{8}{2-x}\geq \frac{2x-2}{x-2}
Combine like terms in x+x-2.
\frac{8}{2-x}-\frac{2x-2}{x-2}\geq 0
Subtract \frac{2x-2}{x-2} from both sides.
\frac{8\left(-1\right)}{x-2}-\frac{2x-2}{x-2}\geq 0
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 2-x and x-2 is x-2. Multiply \frac{8}{2-x} times \frac{-1}{-1}.
\frac{8\left(-1\right)-\left(2x-2\right)}{x-2}\geq 0
Since \frac{8\left(-1\right)}{x-2} and \frac{2x-2}{x-2} have the same denominator, subtract them by subtracting their numerators.
\frac{-8-2x+2}{x-2}\geq 0
Do the multiplications in 8\left(-1\right)-\left(2x-2\right).
\frac{-6-2x}{x-2}\geq 0
Combine like terms in -8-2x+2.
-2x-6\leq 0 x-2<0
For the quotient to be ≥0, -2x-6 and x-2 have to be both ≤0 or both ≥0, and x-2 cannot be zero. Consider the case when -2x-6\leq 0 and x-2 is negative.
x\in [-3,2)
The solution satisfying both inequalities is x\in \left[-3,2\right).
-2x-6\geq 0 x-2>0
Consider the case when -2x-6\geq 0 and x-2 is positive.
x\in \emptyset
This is false for any x.
x\in [-3,2)
The final solution is the union of the obtained solutions.
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}