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1. a + b = 5 এবং a -b = 3 হলে, ab এর মান -
- A. 2
- B. 2
- C. 2
- D. 2
Answer: Option C
Explanation:
ab=(a+b/2)^2 - (a-b/2)^2
= (5/2)^2 -(3/2)^2
=25/4 - 9/4
=25-9/4
=16/4
=4
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1. a + b = 5 এবং a -b = 3 হলে, ab এর মান -
Answer: Option C
Explanation:
ab=(a+b/2)^2 - (a-b/2)^2
= (5/2)^2 -(3/2)^2
=25/4 - 9/4
=25-9/4
=16/4
=4
Post your comments here: