দেওয়া আছে, a2 + 1 = 3a
⇒ a + 1a = 3 [a দ্বারা ভাগ করে]
∴ a + 1a = 3
এখন, প্রদত্তরাশিমালা a2 + 1a2 a3 + 1a3
= a + 1a - 2 × a × 1aa + 1a = 32- 2 33 - 3 × 3 = 9-2 27-9 = 7× 18 = 126
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