3x^2/3+2x^1/3=21

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Solution for 3x^2/3+2x^1/3=21 equation: 


x in (-oo:+oo)

(3*x^2)/3+(2*x^1)/3 = 21 // - 21

(3*x^2)/3+(2*x^1)/3-21 = 0

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

x^2+2/3*x-21 = 0

DELTA = (2/3)^2-(-21*1*4)

DELTA = 760/9

DELTA > 0

x = ((760/9)^(1/2)-2/3)/(1*2) or x = (-(760/9)^(1/2)-2/3)/(1*2)

x = ((760/9)^(1/2)-2/3)/2 or x = (-((760/9)^(1/2)+2/3))/2

x in { (-((760/9)^(1/2)+2/3))/2, ((760/9)^(1/2)-2/3)/2 }

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