Datrys [frac{12-sqrt{30-5}}{7}]-2(-3+2)^2

$$[ \frac { 12 - \sqrt { 30 - 5 } } { 7 } ] - 2 ( - 3 + 2 ) ^ { 2 }$$

Enrhifo

$$-1$$

Camau Ateb

Tynnu 5 o 30 i gael 25.

$$\frac{12-\sqrt{25}}{7}-2\left(-3+2\right)^{2}$$

Cyfrifo ail isradd 25 a chael 5.

$$\frac{12-5}{7}-2\left(-3+2\right)^{2}$$

Tynnu 5 o 12 i gael 7.

$$\frac{7}{7}-2\left(-3+2\right)^{2}$$

Rhannu 7 â 7 i gael 1.

$$1-2\left(-3+2\right)^{2}$$

Adio -3 a 2 i gael -1.

$$1-2\left(-1\right)^{2}$$

Cyfrifo -1 i bŵer 2 a chael 1.

$$1-2\times 1$$

Lluosi 2 a 1 i gael 2.

$$1-2$$

Tynnu 2 o 1 i gael -1.

$$-1$$

Ffactor

$$-1$$