Solve for x
x=-\frac{a^{2}}{2}+2
Solve for a (complex solution)
a=-\sqrt{4-2x}
a=\sqrt{4-2x}
Solve for a
a=\sqrt{4-2x}
a=-\sqrt{4-2x}\text{, }x\leq 2
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2x=4-a^{2}
Subtract a^{2} from both sides.
\frac{2x}{2}=\frac{4-a^{2}}{2}
Divide both sides by 2.
x=\frac{4-a^{2}}{2}
Dividing by 2 undoes the multiplication by 2.
x=-\frac{a^{2}}{2}+2
Divide -a^{2}+4 by 2.
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