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2xx=xx+1
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
2x^{2}=xx+1
Multiply x and x to get x^{2}.
2x^{2}=x^{2}+1
Multiply x and x to get x^{2}.
2x^{2}-x^{2}=1
Subtract x^{2} from both sides.
x^{2}=1
Combine 2x^{2} and -x^{2} to get x^{2}.
x=1 x=-1
Take the square root of both sides of the equation.
2xx=xx+1
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
2x^{2}=xx+1
Multiply x and x to get x^{2}.
2x^{2}=x^{2}+1
Multiply x and x to get x^{2}.
2x^{2}-x^{2}=1
Subtract x^{2} from both sides.
x^{2}=1
Combine 2x^{2} and -x^{2} to get x^{2}.
x^{2}-1=0
Subtract 1 from both sides.
x=\frac{0±\sqrt{0^{2}-4\left(-1\right)}}{2}
This equation is in standard form: ax^{2}+bx+c=0. Substitute 1 for a, 0 for b, and -1 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±\sqrt{-4\left(-1\right)}}{2}
Square 0.
x=\frac{0±\sqrt{4}}{2}
Multiply -4 times -1.
x=\frac{0±2}{2}
Take the square root of 4.
x=1
Now solve the equation x=\frac{0±2}{2} when ± is plus. Divide 2 by 2.
x=-1
Now solve the equation x=\frac{0±2}{2} when ± is minus. Divide -2 by 2.
x=1 x=-1
The equation is now solved.