find the common difference of the terms of AP.(x-y),(x+y),(x+3y),......
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What is AP???
❥A well defined sequence in which the difference of succeeding term and preceding term is constant.
Common difference of an AP :-
succeeding term-preceding term
So,
❥(x+y)-(x-y)
❥x+y-x+y
2y
Additional formulas:-
❥an=a+(n-1)d:- n term
❥Sn=n/2(2a+(n-1)
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