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40*x^5-(2*x^4)+((24*x^2)/(-8))*x^2 = 0
40*x^5-2*x^4+((24*x^2)/(-8))*x^2 = 0
40*x^5-5*x^4 = 0
5*x^4*(8*x-1) = 0
8*x-1 = 0 // + 1
8*x = 1 // : 8
x = 1/8
5*x^4 = 0
5*x^4 = 0 // : 5
x^4 = 0
x = 0
x in { 1/8, 0 }
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