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[" 3.Find a if the coeffiecient of "x^(2...

[" 3.Find a if the coeffiecient of "x^(2)" and "x^(3)" in the exapansion of "(3+ax)^(2)" are equal "],[[" (a) "8/5," (b) "9/5," (c) "8/7," (d) "9 pi]]

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