-3=-x^2+6x-18

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Solution for -3=-x^2+6x-18 equation: 



-3=-x^2+6x-18

We move all terms to the left:

-3-(-x^2+6x-18)=0

We get rid of parentheses

x^2-6x+18-3=0

We add all the numbers together, and all the variables

x^2-6x+15=0

a = 1; b = -6; c = +15;
Δ = b2-4ac
Δ = -62-4·1·15
Δ = -24
Delta is less than zero, so there is no solution for the equation

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