Datrys sqrt{36/3}+sqrt{2/81}

$$\sqrt { \frac { 36 } { 3 } } + \sqrt { \frac { 2 } { 81 } }$$

Enrhifo

$$\frac{\sqrt{2}}{9}+2\sqrt{3}\approx 3.621236455$$

Camau Ateb Byr

Rhannu 36 â 3 i gael 12.

$$\sqrt{12}+\sqrt{\frac{2}{81}}$$

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}.

$$2\sqrt{3}+\sqrt{\frac{2}{81}}$$

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{2}{81}} fel rhaniad ail israddau \frac{\sqrt{2}}{\sqrt{81}}.

$$2\sqrt{3}+\frac{\sqrt{2}}{\sqrt{81}}$$

Cyfrifo ail isradd 81 a chael 9.

$$2\sqrt{3}+\frac{\sqrt{2}}{9}$$

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch 2\sqrt{3} â \frac{9}{9}.

$$\frac{9\times 2\sqrt{3}}{9}+\frac{\sqrt{2}}{9}$$

Gan fod gan \frac{9\times 2\sqrt{3}}{9} a \frac{\sqrt{2}}{9} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

$$\frac{9\times 2\sqrt{3}+\sqrt{2}}{9}$$

Gwnewch y gwaith lluosi yn 9\times 2\sqrt{3}+\sqrt{2}.

$$\frac{18\sqrt{3}+\sqrt{2}}{9}$$