-2x+4+x=-x^2

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Solution for -2x+4+x=-x^2 equation: 



-2x+4+x=-x^2

We move all terms to the left:

-2x+4+x-(-x^2)=0

We add all the numbers together, and all the variables

-(-x^2)-1x+4=0

We get rid of parentheses

x^2-1x+4=0

a = 1; b = -1; c = +4;
Δ = b2-4ac
Δ = -12-4·1·4
Δ = -15
Delta is less than zero, so there is no solution for the equation

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