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xx-2\left(x-1\right)=xx+x\left(-1\right)
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
x^{2}-2\left(x-1\right)=xx+x\left(-1\right)
Multiply x and x to get x^{2}.
x^{2}-2\left(x-1\right)=x^{2}+x\left(-1\right)
Multiply x and x to get x^{2}.
x^{2}-2x+2=x^{2}+x\left(-1\right)
Use the distributive property to multiply -2 by x-1.
x^{2}-2x+2-x^{2}=x\left(-1\right)
Subtract x^{2} from both sides.
-2x+2=x\left(-1\right)
Combine x^{2} and -x^{2} to get 0.
-2x+2-x\left(-1\right)=0
Subtract x\left(-1\right) from both sides.
-x+2=0
Combine -2x and -x\left(-1\right) to get -x.
-x=-2
Subtract 2 from both sides. Anything subtracted from zero gives its negation.
x=2
Multiply both sides by -1.