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y = 1/x * √x²-3x+2
x≠0
x²-3x+2≥0
(x-2)(x-1)=0
x=2; x=1
parabola ramiona w gore
x∈(-∞;1>u<2;+∞)
odp:x∈(-∞;0)u(0;1>u<2;+∞)
y = 1/x+5 * √x²+3x+2
x+5≠0→x≠-5
x²-3x+2≥0
(x-2)(x-1)=0
x=2; x=1
parabola ramiona w gore
x∈(-∞;1>u<2;+∞)
odp:x∈(-∞;-5)u(-5;1>u<2;+∞)