Datrys 1/3sqrt{081}-2sqrt{61/4}+1/10sqrt{64+36}

$$\frac { 1 } { 3 } \sqrt { 081 } - 2 \sqrt { 6 \frac { 1 } { 4 } } + \frac { 1 } { 10 } \sqrt { 64 + 36 }$$

Enrhifo

$$-4$$

Camau Ateb

Lluosi 0 a 81 i gael 0.

$$\frac{1}{3}\sqrt{0}-2\sqrt{\frac{6\times 4+1}{4}}+\frac{1}{10}\sqrt{64+36}$$

Cyfrifo ail isradd 0 a chael 0.

$$\frac{1}{3}\times 0-2\sqrt{\frac{6\times 4+1}{4}}+\frac{1}{10}\sqrt{64+36}$$

Lluosi \frac{1}{3} a 0 i gael 0.

$$0-2\sqrt{\frac{6\times 4+1}{4}}+\frac{1}{10}\sqrt{64+36}$$

Lluosi 6 a 4 i gael 24.

$$0-2\sqrt{\frac{24+1}{4}}+\frac{1}{10}\sqrt{64+36}$$

Adio 24 a 1 i gael 25.

$$0-2\sqrt{\frac{25}{4}}+\frac{1}{10}\sqrt{64+36}$$

Ailysgrifennu ail isradd y rhaniad \frac{25}{4} fel rhaniad ail israddau \frac{\sqrt{25}}{\sqrt{4}}. Cymryd ail isradd y rhifiadur a'r enwadur.

$$0-2\times \frac{5}{2}+\frac{1}{10}\sqrt{64+36}$$

Canslo 2 a 2.

$$0-5+\frac{1}{10}\sqrt{64+36}$$

Tynnu 5 o 0 i gael -5.

$$-5+\frac{1}{10}\sqrt{64+36}$$

Adio 64 a 36 i gael 100.

$$-5+\frac{1}{10}\sqrt{100}$$

Cyfrifo ail isradd 100 a chael 10.

$$-5+\frac{1}{10}\times 10$$

Canslo 10 a 10.

$$-5+1$$

Adio -5 a 1 i gael -4.

$$-4$$

Ffactor

$$-4$$