If the numbers `a , b , c , d , e` form an A.P. , then find the value of `a-4b+6c-4d+edot`

Explanation

Given that` a,b,c,d,e` are in Arithmetic progression.


that means first term `a_1=a`


let common difference be D then we can rewrite each term using nth term formula as:


`a_n=a1+(n-1)d`


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