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1. a2-b2

A. 34
B. 34
C. 34
D. 34

Answer: Option A

Explanation:

দেওয়া আছে, (a + b) =8, ab=15 a^{2} - b^{2} = {(a + b)}^{2} - 2 a b = 8^{2} - 2.15 = 64 - 30 = 34 a n s

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