hey..gyzz plzz help....
plzz solve the next...plzz
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104-2y
------------ *y=640
2
104y-2y^2=1280
taking 2 as common
52y-y^2=640
y^2-52y+640=0
y^2-32y-20y+640=0
y(y-32) -20(y-32) =0
(y-20)(y-32)=0
y=32,20
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