Datrys sqrt{8}sqrt{12}=

$$\sqrt { 8 } \sqrt { 12 } =$$

Enrhifo

$$4\sqrt{6}\approx 9.797958971$$

Camau Ateb

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}.

$$2\sqrt{2}\sqrt{12}$$

Ffactora 12=2^{2}\times 3. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 3} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{3}. Cymryd isradd 2^{2}.

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

Lluosi 2 a 2 i gael 4.

$$4\sqrt{2}\sqrt{3}$$

I luosi \sqrt{2} a \sqrt{3}, dylid lluosi'r rhifau dan yr ail isradd.

$$4\sqrt{6}$$