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0=y^2-8y+17
We move all terms to the left:
0-(y^2-8y+17)=0
We add all the numbers together, and all the variables
-(y^2-8y+17)=0
We get rid of parentheses
-y^2+8y-17=0
We add all the numbers together, and all the variables
-1y^2+8y-17=0
a = -1; b = 8; c = -17;
Δ = b2-4ac
Δ = 82-4·(-1)·(-17)
Δ = -4
Delta is less than zero, so there is no solution for the equation
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