Solve for y
y=\frac{25-x^{2}}{2}
Solve for x (complex solution)
x=-\sqrt{25-2y}
x=\sqrt{25-2y}
Solve for x
x=\sqrt{25-2y}
x=-\sqrt{25-2y}\text{, }y\leq \frac{25}{2}
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2y=25-x^{2}
Subtract x^{2} from both sides.
\frac{2y}{2}=\frac{25-x^{2}}{2}
Divide both sides by 2.
y=\frac{25-x^{2}}{2}
Dividing by 2 undoes the multiplication by 2.
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