a + a+3d = 2
a^2 + (a+3d)^2 = 20
you will get two solutions.
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
2 answers
I need solution and answers
1 answer