Discuss Forum
1. P+Q=5 এবং p-q=3 হলে pq এর মান কত?
- A. 15
- B. 15
- C. 15
- D. 15
Answer: Option C
Explanation:
pq=(p+q/2)^2 - (p-q/2)^2
= (5/2)^2 -(3/2)^2
=25/4 - 9/4
=25-9/4
=16/4
=4
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1. P+Q=5 এবং p-q=3 হলে pq এর মান কত?
Answer: Option C
Explanation:
pq=(p+q/2)^2 - (p-q/2)^2
= (5/2)^2 -(3/2)^2
=25/4 - 9/4
=25-9/4
=16/4
=4
Post your comments here: