Datrys (1-sqrt{3})^2+2(3+sqrt{3})

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

Enrhifo

$$10$$

Camau Ateb

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(1-\sqrt{3}\right)^{2}.

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

Sgwâr \sqrt{3} yw 3.

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

Adio 1 a 3 i gael 4.

$$4-2\sqrt{3}+2\left(3+\sqrt{3}\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 2 â 3+\sqrt{3}.

$$4-2\sqrt{3}+6+2\sqrt{3}$$

Adio 4 a 6 i gael 10.

$$10-2\sqrt{3}+2\sqrt{3}$$

Cyfuno -2\sqrt{3} a 2\sqrt{3} i gael 0.

$$10$$

Ffactor

$$2\times 5$$