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TS EAMCET 14-Sep-2020 Shift 2 Solved Paper

Section: Mathematics
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Question : 3 of 160
 
Marks: +1, -0
Let f(n)=A(−2)n+B(−3)n∀ A,B ∊ R and n∊ N{1, 2}. If
f(n)+af(n−1)+bf(n−2), then (a+b)(b−a)=
Validate
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