Datrys sqrt{8}*sqrt{2}=sqrt{2*2}=sqrt{16}

$$\sqrt { 8 } \cdot \sqrt { 2 } = \sqrt { 2 \cdot 2 } = \sqrt { 16 }$$

Gwireddu

Camau Ateb

Ffactora 8=2\times 4. Ailysgrifennu ail isradd y lluoswm \sqrt{2\times 4} fel lluoswm ail israddau \sqrt{2}\sqrt{4}.

$$\sqrt{2}\sqrt{4}\sqrt{2}=\sqrt{2\times 2}\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

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

$$2\sqrt{4}=\sqrt{2\times 2}\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

Cyfrifo ail isradd 4 a chael 2.

$$2\times 2=\sqrt{2\times 2}\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

Lluosi 2 a 2 i gael 4.

$$4=\sqrt{2\times 2}\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

Lluosi 2 a 2 i gael 4.

$$4=\sqrt{4}\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

Cyfrifo ail isradd 4 a chael 2.

$$4=2\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

Cymharu 4 gyda 2.

$$\text{false}\text{ and }\sqrt{2\times 2}=\sqrt{16}$$

Lluosi 2 a 2 i gael 4.

$$\text{false}\text{ and }\sqrt{4}=\sqrt{16}$$

Cyfrifo ail isradd 4 a chael 2.

$$\text{false}\text{ and }2=\sqrt{16}$$

Cyfrifo ail isradd 16 a chael 4.

$$\text{false}\text{ and }2=4$$

Cymharu 2 gyda 4.

$$\text{false}\text{ and }\text{false}$$

Cysylltydd \text{false} a \text{false} yw \text{false}.

$$\text{false}$$