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Nice. A different way to find the quadratic equation for x is: x=(1+sqrt(17))/2, x*=(1-sqrt(17))/2 /* There are two conjugate roots */ x+x* = 1, x*(x*) = -4 /* sum and product of roots */ Using Vieta's formula x^2 - x -4 = 0. x^2 = x+4 .....
