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The sum of the first and fourth terms of an arithimetic sequences is 2 and the sum of their squares is 20
1. Find the common difference
2.find the sum of the first eight terms of the squence
9 years ago

Answers

Steve
a + a+3d = 2
a^2 + (a+3d)^2 = 20

you will get two solutions.
9 years ago
FEDRICK
I need solution and answers
3 years ago

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