Question

if x=√5+1/√5-1 and y=√5-1/√5+1 then find the value of x²+y²

Answer 1

Step-by-step explanation:

=(√5+1/√5-1)+(√5-1/√5+1)

=(√5+1/√5-1)(√5+1/√5+1)+(√5-1/√5+1)(√5-1/√5+1)

=(6+2√5+4+2√5)/4

=10+4√5