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D( w )
4*w+8 = 0
w+2 = 0
4*w+8 = 0
4*w+8 = 0
4*w+8 = 0 // - 8
4*w = -8 // : 4
w = -8/4
w = -2
w+2 = 0
w+2 = 0
w+2 = 0 // - 2
w = -2
w in (-oo:-2) U (-2:+oo)
3/(4*w+8)+1 = -5/(w+2) // + -5/(w+2)
3/(4*w+8)-(-5/(w+2))+1 = 0
3/(4*w+8)+5*(w+2)^-1+1 = 0
3/(4*w+8)+5/(w+2)+1 = 0
(3*(w+2))/((4*w+8)*(w+2))+(5*(4*w+8))/((4*w+8)*(w+2))+(1*(4*w+8)*(w+2))/((4*w+8)*(w+2)) = 0
3*(w+2)+5*(4*w+8)+1*(4*w+8)*(w+2) = 0
4*w^2+23*w+16*w+16+46 = 0
4*w^2+39*w+62 = 0
4*w^2+39*w+62 = 0
4*w^2+39*w+62 = 0
DELTA = 39^2-(4*4*62)
DELTA = 529
DELTA > 0
w = (529^(1/2)-39)/(2*4) or w = (-529^(1/2)-39)/(2*4)
w = -2 or w = -31/4
(w+31/4)*(w+2) = 0
((w+31/4)*(w+2))/((4*w+8)*(w+2)) = 0
((w+31/4)*(w+2))/((4*w+8)*(w+2)) = 0 // * (4*w+8)*(w+2)
(w+31/4)*(w+2) = 0
( w+2 )
w+2 = 0 // - 2
w = -2
( w+31/4 )
w+31/4 = 0 // - 31/4
w = -31/4
w in { -2}
w = -31/4
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