42/2x3+4x2^3

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Solution for 42/2x3+4x2^3 equation: 


x in (-oo:+oo)

4*x^(2^3)+(42/2)*x^3 = 0

4*x^8+21*x^3 = 0

x^3*(4*x^5+21) = 0

4*x^5 = -21 // : 4

x^5 = -21/4

x^5 = -21/4 // ^ 1/5

x = -(21/4)^(1/5)

x^3 = 0

1*x^3 = 0 // : 1

x^3 = 0

x = 0

x in { -(21/4)^(1/5), 0 }

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