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Please anyone simplify it step by step

Note by Syed Baqir
1 year, 4 months ago

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Check out Arithmetic-Geometric Progression. Staff · 1 year, 4 months ago

Yes but I could not understand how to applu AGP formula with a = x , d =x , r = x n = n , for this I tried lots of time but couldnot find, :D

It is copied from that place, · 1 year, 4 months ago