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m-2>0
m>2
i
Δ=4(2m-3)²-4(m-2)(5m-6) < 0
4(4m²-12m+9) -4(5m²-6m-10m+12) < 0 /:4
4m²-12m+9 - 5m²+16m-12 <0
-m²+4m-3 < 0
-(m² - m - 3m +3) < 0 /:(-1)
m(m-1)-3(m-1) > 0
(m-1)(m-3) > 0
m.z.: m=1, m=3
m∈(-∞, 1) u (3,+∞) i m>2
Odp. m∈(3, +∞)