P + q = 5 এবং p - q = 3 হলে pq এর মান কত?
Solution
Correct Answer: Option C
দেওয়া আছে
p + q = 5
p - q = 3
আমরা জানি,
4pq = (p + q)2 - (p - q)2
⇒ 4pq = 52 - 32
⇒ 4pq = 25 - 9
⇒ 4pq = 16
⇒ 4pq = 16/4
∴ pq = 4
p + q = 5
p - q = 3
আমরা জানি,
4pq = (p + q)2 - (p - q)2
⇒ 4pq = 52 - 32
⇒ 4pq = 25 - 9
⇒ 4pq = 16
⇒ 4pq = 16/4
∴ pq = 4
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions