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(10-y)y=600
We move all terms to the left:
(10-y)y-(600)=0
We add all the numbers together, and all the variables
(-1y+10)y-600=0
We multiply parentheses
-1y^2+10y-600=0
a = -1; b = 10; c = -600;
Δ = b2-4ac
Δ = 102-4·(-1)·(-600)
Δ = -2300
Delta is less than zero, so there is no solution for the equation
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