G(4)=2-x2

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Solution for G(4)=2-x2 equation: 



(4)=2-G2

We move all terms to the left:

(4)-(2-G2)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

1G^2-2+4=0

We add all the numbers together, and all the variables

G^2+2=0

a = 1; b = 0; c = +2;
Δ = b2-4ac
Δ = 02-4·1·2
Δ = -8
Delta is less than zero, so there is no solution for the equation

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