Datrys 2*(sqrt{2}-1)*(sqrt{2}+1)

$$2 \times ( \sqrt{ 2 } -1) \times ( \sqrt{ 2 } +1)$$

Enrhifo

$$2$$

Camau Ateb

Defnyddio’r briodwedd ddosbarthu i luosi 2 â \sqrt{2}-1.

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

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 2\sqrt{2}-2 gan bob \sqrt{2}+1.

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

Sgwâr \sqrt{2} yw 2.

$$2\times 2+2\sqrt{2}-2\sqrt{2}-2$$

Lluosi 2 a 2 i gael 4.

$$4+2\sqrt{2}-2\sqrt{2}-2$$

Cyfuno 2\sqrt{2} a -2\sqrt{2} i gael 0.

$$4-2$$

Tynnu 2 o 4 i gael 2.

$$2$$

Ffactor

$$2$$