1.

5*(25)n+1-25*(5)2n --------------------------------------- 5*(5)​​​​2n+3-(25)n+1 ​​​​​​​​​ ​​​​​​​​​

Answer»

5*(25)n+1-25*(5)2n

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5*(5)​​​​2n+3-(25)n+1

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