Question

if x+1/x=3,find x²+1/x²​

Answer 1

Answer:

» x + 1/x = 3

On sq

» x² + 1/x² = 9 - 2

» x² + 1/x² = 7

Is the required answer.

Answer 2

Step-by-step explanation:

• x + 1/x = 3
• Squaring both side
• (x+1/x) ^2 = (3)^2
• x^2 + 1/x^2 + 2*x*1/x = 9
• x^2 +1/x^2 +2 = 9
• x^2 + 1/x^2 = 9-2
• x^2 + 1/x^2 = 7