1/3x^2-7/9x-20/9=0

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Solution for 1/3x^2-7/9x-20/9=0 equation: 


x in (-oo:+oo)

(1/3)*x^2-((7/9)*x)-(20/9) = 0

(1/3)*x^2+(-7/9)*x-20/9 = 0

1/3*x^2-7/9*x-20/9 = 0

DELTA = (-7/9)^2-(-20/9*1/3*4)

DELTA = 289/81

DELTA > 0

x = ((289/81)^(1/2)+7/9)/(1/3*2) or x = (7/9-(289/81)^(1/2))/(1/3*2)

x = 4 or x = -5/3

x in { -5/3, 4 }

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