Datrys ar gyfer A
\left\{\begin{matrix}\\A=0\text{, }&\text{unconditionally}\\A\in \mathrm{R}\text{, }&|D|=\sqrt{7}|B|\end{matrix}\right.
Datrys ar gyfer B
\left\{\begin{matrix}\\B=\frac{\sqrt{7}D}{7}\text{; }B=-\frac{\sqrt{7}D}{7}\text{, }&\text{unconditionally}\\B\in \mathrm{R}\text{, }&A=0\end{matrix}\right.
Rhannu
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AD^{2}-7AB^{2}=0
Tynnu 7AB^{2} o'r ddwy ochr.
\left(D^{2}-7B^{2}\right)A=0
Cyfuno pob term sy'n cynnwys A.
A=0
Rhannwch 0 â D^{2}-7B^{2}.
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