Datrys sqrt{2^2+9^2+15}+sqrt{25}-sqrt{36}=

$$\sqrt { 2 ^ { 2 } + 9 ^ { 2 } + 15 } + \sqrt { 25 } - \sqrt { 36 } =$$

Enrhifo

$$9$$

Camau Ateb

Cyfrifo 2 i bŵer 2 a chael 4.

$$\sqrt{4+9^{2}+15}+\sqrt{25}-\sqrt{36}$$

Cyfrifo 9 i bŵer 2 a chael 81.

$$\sqrt{4+81+15}+\sqrt{25}-\sqrt{36}$$

Adio 4 a 81 i gael 85.

$$\sqrt{85+15}+\sqrt{25}-\sqrt{36}$$

Adio 85 a 15 i gael 100.

$$\sqrt{100}+\sqrt{25}-\sqrt{36}$$

Cyfrifo ail isradd 100 a chael 10.

$$10+\sqrt{25}-\sqrt{36}$$

Cyfrifo ail isradd 25 a chael 5.

$$10+5-\sqrt{36}$$

Adio 10 a 5 i gael 15.

$$15-\sqrt{36}$$

Cyfrifo ail isradd 36 a chael 6.

$$15-6$$

Tynnu 6 o 15 i gael 9.

$$9$$

Ffactor

$$3^{2}$$