Question

if x-1/x=4 then find x²+1/x²​

Answer 1

Correct Question :

• if x+ 1/x=4 then find x²+1/x²

Answer :

• Answer is x² + 1/x² = 14

Given :

• x + 1/x = 4

To find :

• x² + 1/x²

Solution :

Here , squaring 1 on both sides we get

→ (x + 1 /x)² = (4)²

→ x² + 1/x² + 2 × x × 1/x = 16

→ x² - 1/x² - 2 = 16

→ x² + 1/x² = 16 - 2

→ x² + 1/x² = 14

Hence, Answer is x² + 1/x² = 14