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\left(x-1\right)\left(x+1\right)=x\left(x-2\right)
Variable x cannot be equal to any of the values 0,1 since division by zero is not defined. Multiply both sides of the equation by x\left(x-1\right), the least common multiple of x,x-1.
x^{2}-1=x\left(x-2\right)
Consider \left(x-1\right)\left(x+1\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Square 1.
x^{2}-1=x^{2}-2x
Use the distributive property to multiply x by x-2.
x^{2}-1-x^{2}=-2x
Subtract x^{2} from both sides.
-1=-2x
Combine x^{2} and -x^{2} to get 0.
-2x=-1
Swap sides so that all variable terms are on the left hand side.
x=\frac{-1}{-2}
Divide both sides by -2.
x=\frac{1}{2}
Fraction \frac{-1}{-2} can be simplified to \frac{1}{2} by removing the negative sign from both the numerator and the denominator.