a+2/a=-1

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Solution for a+2/a=-1 equation: 


D( a )

a = 0

a = 0

a = 0

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

a+2/a = -1 // + 1

a+2/a+1 = 0

1*a^1+2*a^-1+1*a^0 = 0

(1*a^2+1*a^1+2*a^0)/(a^1) = 0 // * a^2

a^1*(1*a^2+1*a^1+2*a^0) = 0

a^1

a^2+a+2 = 0

a^2+a+2 = 0

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

DELTA = -7

DELTA < 0

a in { } 

a belongs to the empty set

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