t+8/t=-9

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Solution for t+8/t=-9 equation: 


D( t )

t = 0

t = 0

t = 0

t in (-oo:0) U (0:+oo)

t+8/t = -9 // + 9

t+8/t+9 = 0

1*t^1+8*t^-1+9*t^0 = 0

(1*t^2+9*t^1+8*t^0)/(t^1) = 0 // * t^2

t^1*(1*t^2+9*t^1+8*t^0) = 0

t^1

t^2+9*t+8 = 0

t^2+9*t+8 = 0

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

DELTA = 49

DELTA > 0

t = (49^(1/2)-9)/(1*2) or t = (-49^(1/2)-9)/(1*2)

t = -1 or t = -8

t in { -8, -1} 

t in { -8, -1 }

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