if x+1/x = 3
, then find the value of x^2+1/x^2
Answers
Answered by
2
Answer:
7
Step-by-step explanation:
x + 1/x = 3
Thus, (x + 1/x)² = 3² => 9
x + (1/x)² + 2(x)(1/x) = 9
=> x² + 1/x² + 2 = 9
∴ x² + 1/x² = 9 - 2 => 7
Similar questions