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In this lesson, we will learn how to find arithmetic sequences given some information about it.

Q1:

Find the arithmetic sequence in which 𝑎+𝑎=−28 and 𝑎×𝑎=140.

Q2:

Find the arithmetic sequence given 𝑎𝑎=1,708, 𝑎𝑎−𝑎𝑎=336 and all terms are positive.

Q3:

Find the arithmetic sequence whose ninth term is −119, and the arithmetic mean between the third and fifth terms is −69.

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