Simplify: $$(√6-2√3)^2$$​​

Correct option is D

Given:  

​$$(√6-2√3)^2$$ 

Solution:  

​$$\text{As we know,} \\ \Rightarrow (a - b)^2 = a^2 + b^2 - 2ab \\ \Rightarrow (\sqrt{6} - 2\sqrt{3})^2 \\ \Rightarrow (\sqrt{6})^2 + (2\sqrt{3})^2 - 2 \times \sqrt{6} \times 2\sqrt{3} \\ \Rightarrow 6 + 12 - 4 \sqrt{18} \\ \Rightarrow 18 - 12\sqrt{2}$$​​