Datrys (-sqrt{5})^2-sqrt{16}+sqrt{(-2)^2}

$$( - \sqrt { 5 } ) ^ { 2 } - \sqrt { 16 } + \sqrt { ( - 2 ) ^ { 2 } }$$

Enrhifo

$$3$$

Camau Ateb

Cyfrifo -\sqrt{5} i bŵer 2 a chael \left(\sqrt{5}\right)^{2}.

$$\left(\sqrt{5}\right)^{2}-\sqrt{16}+\sqrt{\left(-2\right)^{2}}$$

Cyfrifo ail isradd 16 a chael 4.

$$\left(\sqrt{5}\right)^{2}-4+\sqrt{\left(-2\right)^{2}}$$

Cyfrifo -2 i bŵer 2 a chael 4.

$$\left(\sqrt{5}\right)^{2}-4+\sqrt{4}$$

Cyfrifo ail isradd 4 a chael 2.

$$\left(\sqrt{5}\right)^{2}-4+2$$

Adio -4 a 2 i gael -2.

$$\left(\sqrt{5}\right)^{2}-2$$

Sgwâr \sqrt{5} yw 5.

$$5-2$$

Tynnu 2 o 5 i gael 3.

$$3$$

Ffactor

$$3$$