Datrys sqrt{3^2*5^2}=sqrt{3^2}sqrt{5^2}

$$\sqrt { 3 ^ { 2 } \times 5 ^ { 2 } } = \sqrt { 3 ^ { 2 } } \sqrt { 5 ^ { 2 } }$$

Gwireddu

Camau Ateb

Cyfrifo 3 i bŵer 2 a chael 9.

$$\sqrt{9\times 5^{2}}=\sqrt{3^{2}}\sqrt{5^{2}}$$

Cyfrifo 5 i bŵer 2 a chael 25.

$$\sqrt{9\times 25}=\sqrt{3^{2}}\sqrt{5^{2}}$$

Lluosi 9 a 25 i gael 225.

$$\sqrt{225}=\sqrt{3^{2}}\sqrt{5^{2}}$$

Cyfrifo ail isradd 225 a chael 15.

$$15=\sqrt{3^{2}}\sqrt{5^{2}}$$

Cyfrifo 3 i bŵer 2 a chael 9.

$$15=\sqrt{9}\sqrt{5^{2}}$$

Cyfrifo ail isradd 9 a chael 3.

$$15=3\sqrt{5^{2}}$$

Cyfrifo 5 i bŵer 2 a chael 25.

$$15=3\sqrt{25}$$

Cyfrifo ail isradd 25 a chael 5.

$$15=3\times 5$$

Lluosi 3 a 5 i gael 15.

$$15=15$$

Cymharu 15 gyda 15.

$$\text{true}$$