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Y in (-oo:+oo)
Y = (3/2)*(3/1)-5 // - (3/2)*(3/1)-5
Y-((3/2)*(3/1))+5 = 0
Y-9/2+5 = 0
Y+1/2 = 0 // - 1/2
Y = -1/2
Y = -1/2
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