Ebatzi: A, m, a, b, c, d
A=0\text{, }m=0\text{, }a=0\text{, }b=0\text{, }c=0\text{, }d=0
A=-4d^{\frac{3}{4}}\text{, }m=-\frac{\sqrt[4]{d}}{4}\text{, }a=d\text{, }b=d\text{, }c=d\text{, }d\geq 0
A=4d^{\frac{3}{4}}\text{, }m=\frac{\sqrt[4]{d}}{4}\text{, }a=d\text{, }b=d\text{, }c=d\text{, }d\geq 0
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