(a + b) এবং (a + b)2 এর তৃতীয় সমানুপাতী কত?

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RRB Group D 1 Sept 2022 Shift 2 Official Paper
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  1. (a + b)3
  2. a
  3. b
  4. (a + b)

Answer (Detailed Solution Below)

Option 1 : (a + b)3
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Detailed Solution

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প্রদত্ত:

প্রথম সমানুপাতী(a) = (a + b)

দ্বিতীয় সমানুপাতী(b) = (a + b)2

ব্যবহৃত সূত্র:

যদি দুটি সংখ্যা a এবং b হয়

তাহলে a এবং b এর তৃতীয় সমানুপাতী = b2/a

গণনা:

তৃতীয় সমানুপাতী:

= [(a + b)2]2/(a + b)

= (a + b)3

∴ তৃতীয় সমানুপাতী হল (a + b)3

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