5-4/9t-1/9t^2=0

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Solution for 5-4/9t-1/9t^2=0 equation: 


t in (-oo:+oo)

5-((1/9)*t^2)-((4/9)*t) = 0

(-1/9)*t^2+(-4/9)*t+5 = 0

5-1/9*t^2-4/9*t = 0

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

DELTA = 196/81

DELTA > 0

t = ((196/81)^(1/2)+4/9)/(-1/9*2) or t = (4/9-(196/81)^(1/2))/(-1/9*2)

t = -9 or t = 5

t in { -9, 5 }

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