5/9x^2-12/3x-55/9=0

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Solution for 5/9x^2-12/3x-55/9=0 equation: 


x in (-oo:+oo)

(5/9)*x^2-((12/3)*x)-(55/9) = 0

(5/9)*x^2-4*x-55/9 = 0

5/9*x^2-4*x-55/9 = 0

DELTA = (-4)^2-(-55/9*5/9*4)

DELTA = 2396/81

DELTA > 0

x = ((2396/81)^(1/2)+4)/(5/9*2) or x = (4-(2396/81)^(1/2))/(5/9*2)

x = 9/10*((2396/81)^(1/2)+4) or x = 9/10*(4-(2396/81)^(1/2))

x in { 9/10*(4-(2396/81)^(1/2)), 9/10*((2396/81)^(1/2)+4) }

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