If 9th term of an A.P is 0, show that 29th term is twice its 19th term

1.	If 9th term of an A.P is 0, show that 29th term is twice its 19th term
Answer» Let the first term of an A.P. =\xa0aAnd common difference =\xa0dGiven: 9th\xa0term of an A.P. is 0. Therefore,We have to prove that\xa0Thus,AndFrom equation (2) and (3),Hence proved

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