Question
Download Solution PDFযদি a + b = 10 এবং ab = 9 হয়, তাহলে a - b এর মান কত?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
a + b = 10
ab = 9
অনুসৃত ধারণা:
(a – b)2 = a2 + b2 – 2ab
গণনা:
(a – b) এর বর্গ করে পাই,
⇒ (a – b)2 = (a + b)2 – 4ab
সূত্রে মানগুলি বসিয়ে পাই,
⇒ (a – b)2 = 102 – 4 × 9 = 100 – 36
⇒ (a – b)2 = 64
⇒ a – b =
সুতরাং, a – b এর মান 8
Last updated on Jun 17, 2025
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