Datrys (frac{sqrt{5}}{sqrt{6}}-frac{sqrt{2}}{sqrt{15}})

$$( \frac { \sqrt { 5 } } { \sqrt { 6 } } - \frac { \sqrt { 2 } } { \sqrt { 15 } } )$$

Enrhifo

$$\frac{\sqrt{30}}{10}\approx 0.547722558$$

Camau Ateb

Mae'n rhesymoli enwadur \frac{\sqrt{5}}{\sqrt{6}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{6}.

$$\frac{\sqrt{5}\sqrt{6}}{\left(\sqrt{6}\right)^{2}}-\frac{\sqrt{2}}{\sqrt{15}}$$

Sgwâr \sqrt{6} yw 6.

$$\frac{\sqrt{5}\sqrt{6}}{6}-\frac{\sqrt{2}}{\sqrt{15}}$$

I luosi \sqrt{5} a \sqrt{6}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{\sqrt{30}}{6}-\frac{\sqrt{2}}{\sqrt{15}}$$

Mae'n rhesymoli enwadur \frac{\sqrt{2}}{\sqrt{15}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{15}.

$$\frac{\sqrt{30}}{6}-\frac{\sqrt{2}\sqrt{15}}{\left(\sqrt{15}\right)^{2}}$$

Sgwâr \sqrt{15} yw 15.

$$\frac{\sqrt{30}}{6}-\frac{\sqrt{2}\sqrt{15}}{15}$$

I luosi \sqrt{2} a \sqrt{15}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{\sqrt{30}}{6}-\frac{\sqrt{30}}{15}$$

Cyfuno \frac{\sqrt{30}}{6} a -\frac{\sqrt{30}}{15} i gael \frac{1}{10}\sqrt{30}.

$$\frac{1}{10}\sqrt{30}$$