Datrys sqrt{38/981}

$$\sqrt{ \frac{ 38 }{ 981 } }$$

Enrhifo

$$\frac{\sqrt{4142}}{327}\approx 0.196814592$$

Camau Ateb

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{38}{981}} fel rhaniad ail israddau \frac{\sqrt{38}}{\sqrt{981}}.

$$\frac{\sqrt{38}}{\sqrt{981}}$$

Ffactora 981=3^{2}\times 109. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 109} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{109}. Cymryd isradd 3^{2}.

$$\frac{\sqrt{38}}{3\sqrt{109}}$$

Mae'n rhesymoli enwadur \frac{\sqrt{38}}{3\sqrt{109}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{109}.

$$\frac{\sqrt{38}\sqrt{109}}{3\left(\sqrt{109}\right)^{2}}$$

Sgwâr \sqrt{109} yw 109.

$$\frac{\sqrt{38}\sqrt{109}}{3\times 109}$$

I luosi \sqrt{38} a \sqrt{109}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{\sqrt{4142}}{3\times 109}$$

Lluosi 3 a 109 i gael 327.

$$\frac{\sqrt{4142}}{327}$$