Datrys 3sqrt{2}*sqrt{80}divsqrt{90}

$$3 \sqrt{ 2 } \times \sqrt{ 80 } \div \sqrt{ 90 }$$

Enrhifo

$$4$$

Camau Ateb

Ffactora 80=2\times 40. Ailysgrifennu ail isradd y lluoswm \sqrt{2\times 40} fel lluoswm ail israddau \sqrt{2}\sqrt{40}.

$$\frac{3\sqrt{2}\sqrt{2}\sqrt{40}}{\sqrt{90}}$$

Lluosi \sqrt{2} a \sqrt{2} i gael 2.

$$\frac{3\times 2\sqrt{40}}{\sqrt{90}}$$

Lluosi 3 a 2 i gael 6.

$$\frac{6\sqrt{40}}{\sqrt{90}}$$

Ffactora 40=2^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 10} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{10}. Cymryd isradd 2^{2}.

$$\frac{6\times 2\sqrt{10}}{\sqrt{90}}$$

Lluosi 6 a 2 i gael 12.

$$\frac{12\sqrt{10}}{\sqrt{90}}$$

Ffactora 90=3^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 10} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{10}. Cymryd isradd 3^{2}.

$$\frac{12\sqrt{10}}{3\sqrt{10}}$$

Canslo 3\sqrt{10} yn y rhifiadur a'r enwadur.

$$4$$

Ffactor

$$2^{2}$$