F(x)=-x2+2x-1

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Solution for F(x)=-x2+2x-1 equation: 



(F)=-F2+2F-1

We move all terms to the left:

(F)-(-F2+2F-1)=0

We add all the numbers together, and all the variables

-(-1F^2+2F-1)+F=0

We get rid of parentheses

1F^2-2F+F+1=0

We add all the numbers together, and all the variables

F^2-1F+1=0

a = 1; b = -1; c = +1;
Δ = b2-4ac
Δ = -12-4·1·1
Δ = -3
Delta is less than zero, so there is no solution for the equation

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