20y^4-15y^3-5y^2/5y^2

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Solution for 20y^4-15y^3-5y^2/5y^2 equation: 


y in (-oo:+oo)

20*y^4-(((5*y^2)/5)*y^2)-(15*y^3) = 0

20*y^4-y^4-15*y^3 = 0

19*y^4-15*y^3 = 0

y^3*(19*y-15) = 0

19*y-15 = 0 // + 15

19*y = 15 // : 19

y = 15/19

y^3 = 0

1*y^3 = 0 // : 1

y^3 = 0

y = 0

y in { 15/19, 0 }

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