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x^2*((8*x^5-(32*x^4))/4) = 0
x^2*((8*x^5-32*x^4)/4) = 0
(x^2*(8*x^5-32*x^4))/4 = 0
8*x^5-32*x^4 = 0
8*x^4*(x-4) = 0
x-4 = 0 // + 4
x = 4
8*x^4*(x-4) = 0
(8*x^2*x^4*(x-4))/4 = 0
( 8*x^4 )
8*x^4 = 0 // : 8
x^4 = 0
x = 0
( x-4 )
x-4 = 0 // + 4
x = 4
( x^2 )
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in { 0, 4, 0 }
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