Discuss Forum
1. 2x + 2/x = 3 হলে, x2 + 1/x2 = কত?
- A. 3
- B. 3
- C. 3
- D. 3
Answer: Option D
Explanation:
2{x + (1/x)} = 3
= > x + (1/x) = 3/2
now,
x² + 1/x²
= {x + (1/x)}² - 2.x.(1/x)
= (3/2)² - 2
= (9/2) - 2
= (9 - 8)/4
= 1/4
Post your comments here:
1. 2x + 2/x = 3 হলে, x2 + 1/x2 = কত?
Answer: Option D
Explanation:
2{x + (1/x)} = 3
= > x + (1/x) = 3/2
now,
x² + 1/x²
= {x + (1/x)}² - 2.x.(1/x)
= (3/2)² - 2
= (9/2) - 2
= (9 - 8)/4
= 1/4
Post your comments here: