0=1/18x^2-5/9x-8

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Solution for 0=1/18x^2-5/9x-8 equation: 


x in (-oo:+oo)

0 = (1/18)*x^2-((5/9)*x)-8 // - (1/18)*x^2-((5/9)*x)-8

(5/9)*x-((1/18)*x^2)+0+8 = 0

(-1/18)*x^2+(5/9)*x+0+8 = 0

5/9*x-1/18*x^2+8 = 0

DELTA = (5/9)^2-(-1/18*4*8)

DELTA = 169/81

DELTA > 0

x = ((169/81)^(1/2)-5/9)/(-1/18*2) or x = (-(169/81)^(1/2)-5/9)/(-1/18*2)

x = -8 or x = 18

x in { -8, 18 }

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