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D( x )
3*x^2+6*x+3 = 0
2*x+2 = 0
3*x^2+6*x+3 = 0
3*x^2+6*x+3 = 0
3*x^2+6*x+3 = 0
DELTA = 6^2-(3*3*4)
DELTA = 0
x = -6/(2*3)
x = -1 or x = -1
2*x+2 = 0
2*x+2 = 0
2*x+2 = 0 // - 2
2*x = -2 // : 2
x = -2/2
x = -1
x in (-oo:-1) U (-1:+oo)
1/(2*x+2)-((x-1)/(3*x^2+6*x+3)) = 0
1/(2*x+2)+(-1*(x-1))/(3*x^2+6*x+3) = 0
3*x^2+6*x+3 = 0
3*x^2+6*x+3 = 0
3*(x^2+2*x+1) = 0
x^2+2*x+1 = 0
DELTA = 2^2-(1*1*4)
DELTA = 0
x = -2/(1*2)
x = -1 or x = -1
3*(x+1)^2 = 0
1/(2*x+2)+(-1*(x-1))/(3*(x+1)^2) = 0
(1*3*(x+1)^2)/(3*(2*x+2)*(x+1)^2)+(-1*(x-1)*(2*x+2))/(3*(2*x+2)*(x+1)^2) = 0
1*3*(x+1)^2-1*(x-1)*(2*x+2) = 0
x^2+6*x+5 = 0
x^2+6*x+5 = 0
x^2+6*x+5 = 0
DELTA = 6^2-(1*4*5)
DELTA = 16
DELTA > 0
x = (16^(1/2)-6)/(1*2) or x = (-16^(1/2)-6)/(1*2)
x = -1 or x = -5
(x+5)*(x+1) = 0
((x+5)*(x+1))/(3*(2*x+2)*(x+1)^2) = 0
((x+5)*(x+1))/(3*(2*x+2)*(x+1)^2) = 0 // * 3*(2*x+2)*(x+1)^2
(x+5)*(x+1) = 0
( x+1 )
x+1 = 0 // - 1
x = -1
( x+5 )
x+5 = 0 // - 5
x = -5
x in { -1}
x = -5
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