Solve for x
x=-5
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\left(2x-2\right)x=\left(x-1\right)\left(2x+1\right)+2\times 3
Variable x cannot be equal to any of the values -1,1 since division by zero is not defined. Multiply both sides of the equation by 2\left(x-1\right)\left(x+1\right), the least common multiple of x+1,2x+2,x^{2}-1.
2x^{2}-2x=\left(x-1\right)\left(2x+1\right)+2\times 3
Use the distributive property to multiply 2x-2 by x.
2x^{2}-2x=2x^{2}-x-1+2\times 3
Use the distributive property to multiply x-1 by 2x+1 and combine like terms.
2x^{2}-2x=2x^{2}-x-1+6
Multiply 2 and 3 to get 6.
2x^{2}-2x=2x^{2}-x+5
Add -1 and 6 to get 5.
2x^{2}-2x-2x^{2}=-x+5
Subtract 2x^{2} from both sides.
-2x=-x+5
Combine 2x^{2} and -2x^{2} to get 0.
-2x+x=5
Add x to both sides.
-x=5
Combine -2x and x to get -x.
x=-5
Multiply both sides by -1.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
\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}