Question

if y = 3 + 2√2. then find the value of √y- 1/√5​

Answer 1

$\sqrt{(3+2\sqrt{2}}-1/\sqrt{5}$

WELL i DONT REALLY KNOW MATHS PROPERLY SO AFTER THIS

=$\sqrt{7\sqrt{2}}$-1/$\sqrt{5\\}$

and then I dont really know what comes next sorry but hope the first and second step worked