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m≠3
dla m=3 istnieje jedno rozwiazanie x=0.
(m-3)/(x-m)=x /*(x-m)
x²-mx-(m-3)=0
Δ=m²+4(m-3)>0
m²+4m-12>0
m²-2m+6m-12>0
m(m-2)+6(m-2)>0
(m-2)(m+6)>0
______-6_______2___3_________>
+ + 0 _ _ 0 + X + +
Odp. m∈(-∞,-6) u (2,3) u (3,+∞)