Mathematics, 07.12.2021 06:40 kristygodwin

The sum of three consecutive terms of an arithmetic sequence is 27, and the sum of their squares is 293. What is the absolute difference between the greatest and the least of these three numbers in the arithmetic sequence? The answer is 10 but I don’t know how to get it

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The sum of three consecutive terms of an arithmetic sequence is 27, and the sum of their squares is...