Datrys sqrt{20/27}

$$\sqrt { \frac { 20 } { 27 } }$$

Enrhifo

$$\frac{2\sqrt{15}}{9}\approx 0.860662966$$

Camau Ateb

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{20}{27}} fel rhaniad ail israddau \frac{\sqrt{20}}{\sqrt{27}}.

$$\frac{\sqrt{20}}{\sqrt{27}}$$

Ffactora 20=2^{2}\times 5. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 5} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{5}. Cymryd isradd 2^{2}.

$$\frac{2\sqrt{5}}{\sqrt{27}}$$

Ffactora 27=3^{2}\times 3. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 3} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{3}. Cymryd isradd 3^{2}.

$$\frac{2\sqrt{5}}{3\sqrt{3}}$$

Mae'n rhesymoli enwadur \frac{2\sqrt{5}}{3\sqrt{3}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{3}.

$$\frac{2\sqrt{5}\sqrt{3}}{3\left(\sqrt{3}\right)^{2}}$$

Sgwâr \sqrt{3} yw 3.

$$\frac{2\sqrt{5}\sqrt{3}}{3\times 3}$$

I luosi \sqrt{5} a \sqrt{3}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{2\sqrt{15}}{3\times 3}$$

Lluosi 3 a 3 i gael 9.

$$\frac{2\sqrt{15}}{9}$$