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((1/2)*x+2)*(x^2-(12*x)+36) = 0
((1/2)*x+2)*(x^2-12*x+36) = 0
(1/2*x+2)*(x^2-12*x+36) = 0
x^2-12*x+36 = 0
x^2-12*x+36 = 0
DELTA = (-12)^2-(1*4*36)
DELTA = 0
x = 12/(1*2)
x = 6 or x = 6
(x-6)^2 = 0
(1/2*x+2)*(x-6)^2 = 0
( 1/2*x+2 )
1/2*x+2 = 0 // - 2
1/2*x = -2 // : 1/2
x = -2/1/2
x = -4
( x-6 )
x-6 = 0 // + 6
x = 6
x in { -4, 6, 6 }
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