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Solve for x (complex solution)
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1-axx+x\left(-2\right)=0
Multiply both sides of the equation by x.
1-ax^{2}+x\left(-2\right)=0
Multiply x and x to get x^{2}.
-ax^{2}+x\left(-2\right)=-1
Subtract 1 from both sides. Anything subtracted from zero gives its negation.
-ax^{2}=-1-x\left(-2\right)
Subtract x\left(-2\right) from both sides.
-ax^{2}=-1+2x
Multiply -1 and -2 to get 2.
\left(-x^{2}\right)a=2x-1
The equation is in standard form.
\frac{\left(-x^{2}\right)a}{-x^{2}}=\frac{2x-1}{-x^{2}}
Divide both sides by -x^{2}.
a=\frac{2x-1}{-x^{2}}
Dividing by -x^{2} undoes the multiplication by -x^{2}.
a=-\frac{2}{x}+\frac{1}{x^{2}}
Divide -1+2x by -x^{2}.