(a) Find the product a b, given that a = b = √9-√√9-√9-√7. b) Find all sequences a1, a2, a3,....of real numbers such that for all positive integers m, n ≥ 1, we have V6+√6+√6+√... 5+ √√6 + √6. am+n = Amn = am + an m²an+n²am + 2aman. - mn.

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