Discuss Forum
1. a - 1/a = 1 হলে, a3 - 1/a3 = কত?
- A. 6
- B. 6
- C. 6
- D. 6
Answer: Option B
Explanation:
a³ - (1/a)³ = {a - (1/a)}³ + 3.a.(1/a){a - (1/a)}
= 1³ + 3×1
=1+3
= 4
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1. a - 1/a = 1 হলে, a3 - 1/a3 = কত?
Answer: Option B
Explanation:
a³ - (1/a)³ = {a - (1/a)}³ + 3.a.(1/a){a - (1/a)}
= 1³ + 3×1
=1+3
= 4
Post your comments here: