Question

if x= 2+under root 5 find x+1/x

Answer 1

Answer:

3/2

Step-by-step explanation:

Answer 2

Step-by-step explanation:

x=2+√5

(1/x)={(1)/(2+√5)}

={(1)(2-√5)}/{(2+√5)(2-√5)}

=(2-√5)/(4-5)

=(2-√5)/(-1)

=(√5-2)

therefore,

x+(1/x)=(2+√5)+(√5-2)

=2√5