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x^2*((10*x^6+8*x^4)/2) = 0
(x^2*(10*x^6+8*x^4))/2 = 0
10*x^6+8*x^4 = 0
2*x^4*(5*x^2+4) = 0
5*x^2 = -4 // : 5
x^2 = -4/5
2*x^4 = 0
(2*x^2*x^4)/2 = 0
( 2*x^4 )
2*x^4 = 0 // : 2
x^4 = 0
x = 0
( x^2 )
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in { 0, 0 }
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