Datrys frac{2sqrt{18}-sqrt{32}}{sqrt{8}+sqrt{2}}

$$\frac { 2 \sqrt { 18 } - \sqrt { 32 } } { \sqrt { 8 } + \sqrt { 2 } }$$

Enrhifo

$$\frac{2}{3}\approx 0.666666667$$

Camau Ateb

Ffactora 18=3^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 2} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{2}. Cymryd isradd 3^{2}.

$$\frac{2\times 3\sqrt{2}-\sqrt{32}}{\sqrt{8}+\sqrt{2}}$$

Lluosi 2 a 3 i gael 6.

$$\frac{6\sqrt{2}-\sqrt{32}}{\sqrt{8}+\sqrt{2}}$$

Ffactora 32=4^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{4^{2}\times 2} fel lluoswm ail israddau \sqrt{4^{2}}\sqrt{2}. Cymryd isradd 4^{2}.

$$\frac{6\sqrt{2}-4\sqrt{2}}{\sqrt{8}+\sqrt{2}}$$

Cyfuno 6\sqrt{2} a -4\sqrt{2} i gael 2\sqrt{2}.

$$\frac{2\sqrt{2}}{\sqrt{8}+\sqrt{2}}$$

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}.

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

Cyfuno 2\sqrt{2} a \sqrt{2} i gael 3\sqrt{2}.

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

Canslo \sqrt{2} yn y rhifiadur a'r enwadur.

$$\frac{2}{3}$$

Ffactor

$$\frac{2}{3} = 0.6666666666666666$$