SOLUTION: Find P if P-3, 3P+5 and 18P -5 are three consecutive terms of a GP

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Question 1077763: Find P if P-3, 3P+5 and 18P -5 are three consecutive terms of a GP
Answer by amfagge92(93) About Me  (Show Source):
You can put this solution on YOUR website!
P=10
SOLUTI0N
a=P-3
r=3P+5/P-3
using the 3rd term
p-3*3P%2B5%2FP-3^2=18P-5
Solving we have
9p^2+30P+25=18P^2-59p+15
Solving the quadractic eqn
p=-1/9 OR 10 WE ARE ONLY USING THE POSITIVE VALUE.