SOLUTION: 16s^2+72s=-81

SOLUTION: 16s^2+72s=-81

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Question 363015: 16s^2+72s=-81
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
16s^2+72s=-81
16s^2+72s+81=0
it is a perfect square
(4s)^2+2*4*9+(9)^2
=(4s+9)^2
..
m.ananth@hotmail.ca
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