Question

ifx+1/x=3calculate x2+1/x2

Answer 1

x2 + I/x2 =9-2=7 This is the ans

Answer 2

Answer:

${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy$

so,

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

x^2 + 1/x^2 + 2 = 9

x^2 + 1/x^2 = 9 - 2 = 7