x2-2/15x-1/15

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Solution for x2-2/15x-1/15 equation: 


x in (-oo:+oo)

x^2-((2/15)*x)-(1/15) = 0

x^2+(-2/15)*x-1/15 = 0

x^2-2/15*x-1/15 = 0

DELTA = (-2/15)^2-(-1/15*1*4)

DELTA = 64/225

DELTA > 0

x = ((64/225)^(1/2)+2/15)/(1*2) or x = (2/15-(64/225)^(1/2))/(1*2)

x = 1/3 or x = -1/5

x in { -1/5, 1/3 }

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