Posted by Lara on Wednesday, April 16, 2008 at 5:44pm.
for a GS (x+5)/x = (x+9)/(x+5)
x^2 + 10x + 25 = x^2 + 9x
x = -25
so the terms are -25,-20,-16
Check: -20/-25 = .8
-16/-20 = .8
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