y^2+1/6y-1/6 인수 분해

y^2+1/6y-1/6 인수 분해

오리지널=y&\#178;+1/6y+1/144-1/144-1/6
=(y+1/12)²-25/144
=(y+1/12+5/12)(y+1/12-5/12)
=(y+1/2)(y-1/3)