Solve for A, C
A=\frac{1+\sqrt{31}i}{2}\approx 0.5+2.783882181i\text{, }C=\frac{-\sqrt{31}i+19}{2}\approx 9.5-2.783882181i
A=\frac{-\sqrt{31}i+1}{2}\approx 0.5-2.783882181i\text{, }C=\frac{19+\sqrt{31}i}{2}\approx 9.5+2.783882181i
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