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

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Solution for G(x)=-4x^2+2x-1 equation: 



(G)=-4G^2+2G-1

We move all terms to the left:

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

We get rid of parentheses

4G^2-2G+G+1=0

We add all the numbers together, and all the variables

4G^2-1G+1=0

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

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