Solve for a
a=\frac{x+2b^{2}}{5}
Solve for b (complex solution)
b=-\frac{\sqrt{10a-2x}}{2}
b=\frac{\sqrt{10a-2x}}{2}
Solve for b
b=\frac{\sqrt{10a-2x}}{2}
b=-\frac{\sqrt{10a-2x}}{2}\text{, }a\geq \frac{x}{5}
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5a=x+2b^{2}
Add 2b^{2} to both sides.
\frac{5a}{5}=\frac{x+2b^{2}}{5}
Divide both sides by 5.
a=\frac{x+2b^{2}}{5}
Dividing by 5 undoes the multiplication by 5.
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