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x in (-oo:+oo)
(((1/8)*x^2*(2-x)^1)/2)^2 = 0
(((1/8)*x^2*(2-x))/2)^2 = 0
((1/8*x^2)^2*(2-x)^2)/(2^2) = 0
( 1/8*x^2 )
1/8*x^2 = 0 // : 1/8
x^2 = 0
x = 0
( 2-x )
2-x = 0 // - 2
-x = -2 // * -1
x = 2
x in { 0, 0, 2, 2 }
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