If x+1/x=3 then the value of x^2+1/x^2 is

SSC CHSL 20 Dec 2015 Shift 1 Paper

Question : 148 of 200

Marks: +1, -0

x+1/x=3

then the value of

x^2+1/x^2

Solution:

Given,

x+1/x=3

Squaring on both sides, we get

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

x^2+1/x^2=7

Hence, option D is the correct answer.

Go to Question:

Prev Question

Next Question