Question

. If x+ 1/ = √5.Find the value of (i) ^ 2 + 1/ ^ 2

Answer 1

x+1/x=√5

Now,squaring both the sides,we will get....

x^2+1/x^2+2=5

Therefore,

x^2+1/x^2=5-3=2

Hope you will understand.... Thank You...