Question
Download Solution PDFयदि p + q = 7 और p2 + q2 = 25 है, तो pq का मान ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
p + q = 7
p2 + q2 = 25
प्रयुक्त सूत्र:
(p + q)2 = p2 + q2 + 2pq
गणना:
p + q = 7
p2 + q2 = 25
(p + q)2 = p2 + q2 + 2pq
72 = 25 + 2pq
⇒ 2pq = 49 - 25
⇒ 2pq = 24
⇒ pq = 12
∴ Pq का मान = 12
Last updated on Jul 22, 2025
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