3x3/-8x-2/-7

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Solution for 3x3/-8x-2/-7 equation: 


x in (-oo:+oo)

x*((3*x^3)/(-8))-(2/(-7)) = 0

x*((3*x^3)/(-8))+2/7 = 0

-3/8*x^4 = -2/7 // : -3/8

x^4 = 16/21

x^4 = 16/21 // ^ 1/4

abs(x) = (16/21)^(1/4)

x = (16/21)^(1/4) or x = -(16/21)^(1/4)

x in { (16/21)^(1/4), -(16/21)^(1/4) }

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