1/7y^2-7/3y-2/5

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Solution for 1/7y^2-7/3y-2/5 equation: 


y in (-oo:+oo)

(1/7)*y^2-((7/3)*y)-(2/5) = 0

(1/7)*y^2+(-7/3)*y-2/5 = 0

1/7*y^2-7/3*y-2/5 = 0

DELTA = (-7/3)^2-(-2/5*1/7*4)

DELTA = 1787/315

DELTA > 0

y = ((1787/315)^(1/2)+7/3)/(1/7*2) or y = (7/3-(1787/315)^(1/2))/(1/7*2)

y = 7/2*((1787/315)^(1/2)+7/3) or y = 7/2*(7/3-(1787/315)^(1/2))

y in { 7/2*(7/3-(1787/315)^(1/2)), 7/2*((1787/315)^(1/2)+7/3) }

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