(x-1)^2/3=9

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Solution for (x-1)^2/3=9 equation:


x in (-oo:+oo)

((x-1)^2)/3 = 9 // - 9

((x-1)^2)/3-9 = 0

((x-1)^2)/3+(-9*3)/3 = 0

(x-1)^2-9*3 = 0

x^2-2*x-26 = 0

x^2-2*x-26 = 0

x^2-2*x-26 = 0

DELTA = (-2)^2-(-26*1*4)

DELTA = 108

DELTA > 0

x = (108^(1/2)+2)/(1*2) or x = (2-108^(1/2))/(1*2)

x = (6*3^(1/2)+2)/2 or x = (2-6*3^(1/2))/2

(x-((2-6*3^(1/2))/2))*(x-((6*3^(1/2)+2)/2)) = 0

((x-((2-6*3^(1/2))/2))*(x-((6*3^(1/2)+2)/2)))/3 = 0

((x-((2-6*3^(1/2))/2))*(x-((6*3^(1/2)+2)/2)))/3 = 0 // * 3

(x-((2-6*3^(1/2))/2))*(x-((6*3^(1/2)+2)/2)) = 0

( x-((2-6*3^(1/2))/2) )

x-((2-6*3^(1/2))/2) = 0 // + (2-6*3^(1/2))/2

x = (2-6*3^(1/2))/2

( x-((6*3^(1/2)+2)/2) )

x-((6*3^(1/2)+2)/2) = 0 // + (6*3^(1/2)+2)/2

x = (6*3^(1/2)+2)/2

x in { (2-6*3^(1/2))/2, (6*3^(1/2)+2)/2 }

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