Question
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
1. Find the common difference
2.find the sum of the first eight terms of the squence
Answers
Steve
a + a+3d = 2
a^2 + (a+3d)^2 = 20
you will get two solutions.
a^2 + (a+3d)^2 = 20
you will get two solutions.
FEDRICK
I need solution and answers