Question
Download Solution PDFयदि a + b = 10 और ab = 9, तो a - b का मान ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
a + b = 10
ab = 9
प्रयुक्त अवधारणा:
(a – b)2 = a2 + b2 – 2ab
गणना:
⇒ (a - b) का वर्ग करने पर, हमें प्राप्त होता है
⇒ (a – b)2 = (a + b)2 – 4ab
⇒ सूत्र में मान रखने पर,
⇒ (a – b)2 = 102 – 4 × 9 = 100 – 36
⇒ (a – b)2 = 64
⇒ a – b = \(\sqrt{64}\) = 8
अत:, a – b का मान 8 है।
Last updated on Jun 17, 2025
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