Asked by Eunice

The 2nd and 5th terms of a g.p are-6 and 48,repectively.find the first four term.
Answered by Eunice
Pls give answer to my question
Answered by oobleck
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So. On to the question. Use the formulas you know. That means
a+d = -6
a+4d = 48
subtract the top from the bottom, and you have
3d = 54
d = 18
so a = -24

Now, you know that
S4 = 4/2 (2a+3d)
So plug and chug.
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