求解 x 的值 (复数求解)
x=\frac{Ah^{2}}{690}
\left(h\neq 0\text{ and }a=0\text{ and }A=0\text{ and }c=0\text{ and }b=0\right)\text{ or }\left(h=-A^{-\frac{1}{2}}\sqrt{690c}\text{ and }c\neq 0\text{ and }a=c\text{ and }b=c\text{ and }A\neq 0\right)\text{ or }\left(h=A^{-\frac{1}{2}}\sqrt{690c}\text{ and }c\neq 0\text{ and }a=c\text{ and }b=c\text{ and }A\neq 0\right)
求解 x 的值
x=\frac{Ah^{2}}{690}
\left(A=0\text{ and }c=0\text{ and }b=0\text{ and }h\neq 0\text{ and }a=0\right)\text{ or }\left(a=c\text{ and }b=c\text{ and }h\neq 0\text{ and }A<0\text{ and }c<0\text{ and }|h|=\sqrt{\frac{690c}{A}}\right)\text{ or }\left(a=c\text{ and }b=c\text{ and }h\neq 0\text{ and }A>0\text{ and }c>0\text{ and }|h|=\sqrt{\frac{690c}{A}}\right)
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