(15-1y)y=100

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Solution for (15-1y)y=100 equation: 



(15-1y)y=100

We move all terms to the left:

(15-1y)y-(100)=0

We add all the numbers together, and all the variables

(-1y+15)y-100=0

We multiply parentheses

-1y^2+15y-100=0

a = -1; b = 15; c = -100;
Δ = b2-4ac
Δ = 152-4·(-1)·(-100)
Δ = -175
Delta is less than zero, so there is no solution for the equation

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