Datrys sqrt{7/8}

$$\sqrt { \frac { 7 } { 8 } }$$

Enrhifo

$$\frac{\sqrt{14}}{4}\approx 0.935414347$$

Camau Ateb

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{7}{8}} fel rhaniad ail israddau \frac{\sqrt{7}}{\sqrt{8}}.

$$\frac{\sqrt{7}}{\sqrt{8}}$$

Ffactora 8=2^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 2} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{2}. Cymryd isradd 2^{2}.

$$\frac{\sqrt{7}}{2\sqrt{2}}$$

Mae'n rhesymoli enwadur \frac{\sqrt{7}}{2\sqrt{2}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{2}.

$$\frac{\sqrt{7}\sqrt{2}}{2\left(\sqrt{2}\right)^{2}}$$

Sgwâr \sqrt{2} yw 2.

$$\frac{\sqrt{7}\sqrt{2}}{2\times 2}$$

I luosi \sqrt{7} a \sqrt{2}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{\sqrt{14}}{2\times 2}$$

Lluosi 2 a 2 i gael 4.

$$\frac{\sqrt{14}}{4}$$