Solve for x
x=4
Graph
Share
Copied to clipboard
\left(x-3\right)x+\left(x+3\right)\left(x-1\right)=2x^{2}-2x+1
Variable x cannot be equal to any of the values -3,3 since division by zero is not defined. Multiply both sides of the equation by \left(x-3\right)\left(x+3\right), the least common multiple of x+3,x-3,x^{2}-9.
x^{2}-3x+\left(x+3\right)\left(x-1\right)=2x^{2}-2x+1
Use the distributive property to multiply x-3 by x.
x^{2}-3x+x^{2}+2x-3=2x^{2}-2x+1
Use the distributive property to multiply x+3 by x-1 and combine like terms.
2x^{2}-3x+2x-3=2x^{2}-2x+1
Combine x^{2} and x^{2} to get 2x^{2}.
2x^{2}-x-3=2x^{2}-2x+1
Combine -3x and 2x to get -x.
2x^{2}-x-3-2x^{2}=-2x+1
Subtract 2x^{2} from both sides.
-x-3=-2x+1
Combine 2x^{2} and -2x^{2} to get 0.
-x-3+2x=1
Add 2x to both sides.
x-3=1
Combine -x and 2x to get x.
x=1+3
Add 3 to both sides.
x=4
Add 1 and 3 to get 4.
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}