Datrys sqrt{50}+2sqrt{72}-3sqrt{2}=

$$\sqrt { 50 } + 2 \sqrt { 72 } - 3 \sqrt { 2 } =$$

Enrhifo

$$14\sqrt{2}\approx 19.798989873$$

Camau Ateb

Ffactora 50=5^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{5^{2}\times 2} fel lluoswm ail israddau \sqrt{5^{2}}\sqrt{2}. Cymryd isradd 5^{2}.

$$5\sqrt{2}+2\sqrt{72}-3\sqrt{2}$$

Ffactora 72=6^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{6^{2}\times 2} fel lluoswm ail israddau \sqrt{6^{2}}\sqrt{2}. Cymryd isradd 6^{2}.

$$5\sqrt{2}+2\times 6\sqrt{2}-3\sqrt{2}$$

Lluosi 2 a 6 i gael 12.

$$5\sqrt{2}+12\sqrt{2}-3\sqrt{2}$$

Cyfuno 5\sqrt{2} a 12\sqrt{2} i gael 17\sqrt{2}.

$$17\sqrt{2}-3\sqrt{2}$$

Cyfuno 17\sqrt{2} a -3\sqrt{2} i gael 14\sqrt{2}.

$$14\sqrt{2}$$