1.5 극한 lim(x→4)(x^2-6x+8)/(x^2-5x+4) 1.5 극한 lim(x→4)(x^2-6x+8)/(x^2-5x+4)

1.5 극한 lim(x→4)(x^2-6x+8)/(x^2-5x+4) 1.5 극한 lim(x→4)(x^2-6x+8)/(x^2-5x+4)

lim(x→4) (x^2-6x+8)/ (x^2-5x+4)
=lim(x→4) (x-2)(x-4)/ ( (x-1)(x-4) )
=lim(x→4) (x-2)/(x-1)
=(4-2)/(4-1)
=2/3