G(x-7)=x^2-x

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Solution for G(x-7)=x^2-x equation: 



(G-7)=G^2-G

We move all terms to the left:

(G-7)-(G^2-G)=0

We get rid of parentheses

-G^2+G+G-7=0

We add all the numbers together, and all the variables

-1G^2+2G-7=0

a = -1; b = 2; c = -7;
Δ = b2-4ac
Δ = 22-4·(-1)·(-7)
Δ = -24
Delta is less than zero, so there is no solution for the equation

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