X=7,x2-2x+7

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Solution for X=7,x2-2x+7 equation: 



X=7.X^2-2X+7

We move all terms to the left:

X-(7.X^2-2X+7)=0

We get rid of parentheses

-7.X^2+X+2X-7=0

We add all the numbers together, and all the variables

-7X^2+3X-7=0

a = -7; b = 3; c = -7;
Δ = b2-4ac
Δ = 32-4·(-7)·(-7)
Δ = -187
Delta is less than zero, so there is no solution for the equation

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