The nth term of an AP is given by 2n+ 3. Find the first three terms hence show that the sum of the...

      

The nth term of an AP is given by 2n+ 3. Find the first three terms hence show that the sum of the first n terms is given by Sn = n² + 4n

  

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Kavungya answered the question on September 18, 2019 at 13:27

Next: Wafula was asked to round off to 2/3 decimal places but he truncated it to 3 decimal places.Determine the percentage error as a result...
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