4x^3/2+5=21

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Solution for 4x^3/2+5=21 equation: 


x in (-oo:+oo)

(4*x^3)/2+5 = 21 // - 21

(4*x^3)/2-21+5 = 0

2*x^3 = 16 // : 2

x^3 = 8

x^3 = 8 // ^ 1/3

x = 2

x = 2

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