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1. x + y = 5, xy = 6 হলে, x3 + y3 = কত?
- A. 55
- B. 55
- C. 55
- D. 55
Answer: Option C
Explanation:
দেওয়া আছে, x + y = 5 এবং xy = 6
x3 + y3 = ( x + y) 3 - 3 . xy ( x + y)
= ( 5) 3 - 3. 6. 5
= 125 - 90
= 35
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1. x + y = 5, xy = 6 হলে, x3 + y3 = কত?
Answer: Option C
Explanation:
দেওয়া আছে, x + y = 5 এবং xy = 6
x3 + y3 = ( x + y) 3 - 3 . xy ( x + y)
= ( 5) 3 - 3. 6. 5
= 125 - 90
= 35
Post your comments here: