Solve for x
x=4-7z^{2}
Solve for z (complex solution)
z=-\frac{\sqrt{28-7x}}{7}
z=\frac{\sqrt{28-7x}}{7}
Solve for z
z=\frac{\sqrt{28-7x}}{7}
z=-\frac{\sqrt{28-7x}}{7}\text{, }x\leq 4
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x+7z^{2}=4
Add 4 to both sides. Anything plus zero gives itself.
x=4-7z^{2}
Subtract 7z^{2} from both sides.
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