Datrys a^2+b^2-c^2=2S

$${ a }^{ 2 } + { b }^{ 2 } - { c }^{ 2 } =2S$$

Datrys ar gyfer S

$$S=\frac{a^{2}+b^{2}-c^{2}}{2}$$

Camau ar gyfer Datrys Hafaliad Llinol

Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.

$$2S=a^{2}+b^{2}-c^{2}$$

Rhannu’r ddwy ochr â 2.

$$\frac{2S}{2}=\frac{a^{2}+b^{2}-c^{2}}{2}$$

Mae rhannu â 2 yn dad-wneud lluosi â 2.

$$S=\frac{a^{2}+b^{2}-c^{2}}{2}$$

Datrys ar gyfer a (complex solution)

$$a=-\sqrt{2S-b^{2}+c^{2}}$$

$$a=\sqrt{2S-b^{2}+c^{2}}$$

Datrys ar gyfer a

$$a=\sqrt{2S-b^{2}+c^{2}}$$

$$a=-\sqrt{2S-b^{2}+c^{2}}\text{, }S\geq \frac{b^{2}-c^{2}}{2}$$