Question

(4-underroot2)square​

Answer 1

Step-by-step explanation:

2 underroot 2 is answer

Answer 2

Step-by-step explanation:

(4-√2)^2

this is equals to

(4-√2)(4-√2)

16- 4√2- 4√2+ 2

18-8√2 is the answer

hope it helps:)