SOLUTION: 60r^2+80r+25
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Question 431952: 60r^2+80r+25
Answer by anshu_a(16) (Show Source): You can put this solution on YOUR website!
60r^2+80r+25
60r^2+(30+50)r+25 = 0
60r^2+30r+50r+25 = 0
30r(2r+1)+25(2r+1) = 0
(2r+1)(30r+25) = 0
r = -1/2
and r = -25/30 = -5/6
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