Datrys sqrt{.528(1-.528)div1200}

$$\sqrt{ .528(1-.528) \div 1200 }$$

Enrhifo

$$\frac{\sqrt{1298}}{2500}\approx 0.014411107$$

Camau Ateb

Tynnu 0.528 o 1 i gael 0.472.

$$\sqrt{\frac{0.528\times 0.472}{1200}}$$

Lluosi 0.528 a 0.472 i gael 0.249216.

$$\sqrt{\frac{0.249216}{1200}}$$

Ehangu \frac{0.249216}{1200} drwy luosi'r rhifiadur a'r enwadur gyda 1000000.

$$\sqrt{\frac{249216}{1200000000}}$$

Lleihau'r ffracsiwn \frac{249216}{1200000000} i'r graddau lleiaf posib drwy dynnu a chanslo allan 384.

$$\sqrt{\frac{649}{3125000}}$$

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{649}{3125000}} fel rhaniad ail israddau \frac{\sqrt{649}}{\sqrt{3125000}}.

$$\frac{\sqrt{649}}{\sqrt{3125000}}$$

Ffactora 3125000=1250^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{1250^{2}\times 2} fel lluoswm ail israddau \sqrt{1250^{2}}\sqrt{2}. Cymryd isradd 1250^{2}.

$$\frac{\sqrt{649}}{1250\sqrt{2}}$$

Mae'n rhesymoli enwadur \frac{\sqrt{649}}{1250\sqrt{2}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{2}.

$$\frac{\sqrt{649}\sqrt{2}}{1250\left(\sqrt{2}\right)^{2}}$$

Sgwâr \sqrt{2} yw 2.

$$\frac{\sqrt{649}\sqrt{2}}{1250\times 2}$$

I luosi \sqrt{649} a \sqrt{2}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{\sqrt{1298}}{1250\times 2}$$

Lluosi 1250 a 2 i gael 2500.

$$\frac{\sqrt{1298}}{2500}$$