How to simplify an expression witrh séries ?

Question:How to simplify an expression witrh séries ?

Posted: Aliocha 55 Product: Maple

May 02 2022

The serie is : Sum(-5*3^(-k - 1)*(x - 2)^k, k = 0 .. infinity)

How to simplify (with collect ? with convert ?...) this expression to get this more "traditionnal" writing :

-5/3*sum(((x - 2)/3^k)^k, k = 0 .. infinity)

Thank you for your help.

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