Question

simplify by rationalizing​

Answer 1

(4+√5)/(4-√5) + (4-√5)/(4+√5)

= ((4+√5)2 + (4-√5)2) / ((4)2 - (√5)2)

= (16+5+8√5+16+5-8√5)/16-5

= 42/11

= 3.81

where, (_)2 is a whole square