Rick M.

asked • 08/27/16

The sum of three consecutive odd integers, the first of which is 2n + 1

im having trouble figuring out the answer to this question and I really don't even know where to start on it. if you guys could be help that would be great this is the only question that I am having trouble figuring out

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Mark M. answered • 08/27/16

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Each odd number is 2 more than the previous. The three odd numbers are:
2n + 1, 2n + 3, 2n + 5
The sum of the three
2n + 1 + 2n + 3 + 2n + 5
6n + 10
 
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David S.

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I think Mark meant to write 3(2n) or 6n instead of 3n.  Also the second term would be 1 instead of 2.
So 6n+9 would be the sum.
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08/27/16

David W.

Often, it help to select a value for n (say, n=5) and add the values.
       11+13+15 = 39
     Is this 6(5)+9 ?  yes
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08/27/16

Mark M.

David S., thank you. I shall edit to correct.
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08/27/16

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