7x^3/2-21=0 - solution

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Solution for 7x^3/2-21=0 equation:

x in (-oo:+oo)

(7*x^3)/2-21 = 0

7/2*x^3 = 21 // : 7/2

x^3 = 6

x^3 = 6 // ^ 1/3

x = 6^(1/3)

x = 6^(1/3)

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