Solve for L (complex solution)
L=\sqrt{2x^{2}}+2x
L=-\sqrt{2x^{2}}+2x
Solve for x (complex solution)
x=\frac{\sqrt{2L^{2}}}{2}+L
x=-\frac{\sqrt{2L^{2}}}{2}+L
Solve for L
L=\sqrt{2}x+2x
L=-\sqrt{2}x+2x
Solve for x
x=\frac{\sqrt{2}L}{2}+L
x=-\frac{\sqrt{2}L}{2}+L
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