Question

(root 5 -1)^2 = ? - 2 root 5
a) 6
(b) 6+2√5
(c) 6√5
(d) 6-2√5
(e) None of these

Answer 1

Hello,
Here is your answer

e) none of these because the answer is

$6 + 4 \sqrt{5}$

Answer 2

none of these is the answer