If x + 1/x = 2, then x2 + 1/x2 is equal to

If x + 1/x = 2, then x² + 1/x² is equal to

(a) 4

(b) 2

(c) 0

(d) None of these

Answer : (b) 2

Hint:

x + 1/x = 2

Or, (x + 1/x)² = 2²

Or, x² + 1/x² + 2 = 4

Or, x² + 1/x² = 2

More Solutions:

• Find the value of 8×3 – 27y3 + 90xy + 125.
• If a2 – 1/a2 = 5, evaluate a4 + 1/a4
• Find the relation between p and q.
• Find the value of 2a3 + 2/a3
• If x = 1/(4 – x), find the value of
• Find the value of ¼ (x3 – 1/x3)
• Find the value of x3 – 1/x3
• Find the value of x3 – 1/x3
• Find the sum of their squares.
• If a – b = 7 and a3 – b3 = 133, find:
• Find the coefficient of x2 expansion of