Datrys sqrt{64+25/40}

$$\sqrt { \frac { 64 + 25 } { 40 } }$$

Enrhifo

$$\frac{\sqrt{890}}{20}\approx 1.491643389$$

Camau Ateb

Adio 64 a 25 i gael 89.

$$\sqrt{\frac{89}{40}}$$

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{89}{40}} fel rhaniad ail israddau \frac{\sqrt{89}}{\sqrt{40}}.

$$\frac{\sqrt{89}}{\sqrt{40}}$$

Ffactora 40=2^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 10} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{10}. Cymryd isradd 2^{2}.

$$\frac{\sqrt{89}}{2\sqrt{10}}$$

Mae'n rhesymoli enwadur \frac{\sqrt{89}}{2\sqrt{10}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{10}.

$$\frac{\sqrt{89}\sqrt{10}}{2\left(\sqrt{10}\right)^{2}}$$

Sgwâr \sqrt{10} yw 10.

$$\frac{\sqrt{89}\sqrt{10}}{2\times 10}$$

I luosi \sqrt{89} a \sqrt{10}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{\sqrt{890}}{2\times 10}$$

Lluosi 2 a 10 i gael 20.

$$\frac{\sqrt{890}}{20}$$