Question

please give me(root2 - 2)² with explanation​

Answer 1

Answer:

6-4root2

Step-by-step explanation:

Answer 2

Answer:

$( \sqrt{2} - 2 {)}^{2} \\ = { \sqrt{2} }^{2} + {2}^{2} - 2. \sqrt{2}.2 \\ = 2 + 4 - 4 \sqrt{2} \\ = 6 - 4 \sqrt{2} \\ 2(3 - 2 \sqrt{2} ) \\ ..$