x^2/3+x^1/3=20

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Solution for x^2/3+x^1/3=20 equation: 


x in (-oo:+oo)

(x^2)/3+(x^1)/3 = 20 // - 20

(x^2)/3+(x^1)/3-20 = 0

(x^2)/3+x/3-20 = 0

1/3*x^2+1/3*x-20 = 0

DELTA = (1/3)^2-(-20*1/3*4)

DELTA = 241/9

DELTA > 0

x = ((241/9)^(1/2)-1/3)/(1/3*2) or x = (-(241/9)^(1/2)-1/3)/(1/3*2)

x = 3/2*((241/9)^(1/2)-1/3) or x = -3/2*((241/9)^(1/2)+1/3)

x in { -3/2*((241/9)^(1/2)+1/3), 3/2*((241/9)^(1/2)-1/3) }

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