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Help me with this question please?
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Help me with this question please?

Help me with this question please?-example-1
User Ntoonio
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3^(n+2)-3^n = (3^n).(3^2)-3^n   = 9.3^n - 3^n = (9-1).3^n  = 8.3^n
User Atul Yadav
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