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(6-y)(6-y)+y*y=1
We move all terms to the left:
(6-y)(6-y)+y*y-(1)=0
We add all the numbers together, and all the variables
(-1y+6)(-1y+6)+y*y-1=0
Wy multiply elements
y^2+(-1y+6)(-1y+6)-1=0
We multiply parentheses ..
y^2+(+y^2-6y-6y+36)-1=0
We get rid of parentheses
y^2+y^2-6y-6y+36-1=0
We add all the numbers together, and all the variables
2y^2-12y+35=0
a = 2; b = -12; c = +35;
Δ = b2-4ac
Δ = -122-4·2·35
Δ = -136
Delta is less than zero, so there is no solution for the equation
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