30x^2-40x/6

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Solution for 30x^2-40x/6 equation: 


x in (-oo:+oo)

30*x^2-((40*x)/6) = 0

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

30*x^2-20/3*x = 0

DELTA = (-20/3)^2-(0*4*30)

DELTA = 400/9

DELTA > 0

x = ((400/9)^(1/2)+20/3)/(2*30) or x = (20/3-(400/9)^(1/2))/(2*30)

x = 2/9 or x = 0

x in { 0, 2/9 }

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