Question

12. The sum of a number and its reciprocal is
1/20
The number is

​

Answer 1

Answer:

let x be the number.

x+1/x=1/20

(x^2+1)/x=1/20

x/(x^2+1)=20

x=20(x^2+1)

20x^2-x+1=0

now by quadratic formula

x=[1+-root(-79)]/40