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-2ax+1=-a^{2}
Subtract a^{2} from both sides. Anything subtracted from zero gives its negation.
-2ax=-a^{2}-1
Subtract 1 from both sides.
\left(-2a\right)x=-a^{2}-1
The equation is in standard form.
\frac{\left(-2a\right)x}{-2a}=\frac{-a^{2}-1}{-2a}
Divide both sides by -2a.
x=\frac{-a^{2}-1}{-2a}
Dividing by -2a undoes the multiplication by -2a.
x=\frac{a}{2}+\frac{1}{2a}
Divide -a^{2}-1 by -2a.