The expression for the sum of 'n' terms of an arithmetic sequence is 2n2-n a. What is the common difference b. What is the first term c. Writedown the arithmetic sequence d. Find out the nth term of the arithmetic sequence ie Xn
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You can always find the 'nth term' by using this formula: nth term = dn + (a - d) Where d is the difference between the terms, a is the first term and n is the term number.
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