C=165-8x+x^2

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Solution for C=165-8x+x^2 equation: 



=165-8C+C^2

We move all terms to the left:

-(165-8C+C^2)=0

We get rid of parentheses

-C^2+8C-165=0

We add all the numbers together, and all the variables

-1C^2+8C-165=0

a = -1; b = 8; c = -165;
Δ = b2-4ac
Δ = 82-4·(-1)·(-165)
Δ = -596
Delta is less than zero, so there is no solution for the equation

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