求極限lim 2X^2-5X+2/X^2-X-2 X=2

求極限lim 2X^2-5X+2/X^2-X-2 X=2

lim [2x²;-5x+2]/[x²;-x-2]
x→2
=lim(x-2)(2x-1)/(x-2)(x+1]
x→2
=lim(2x-1)/(x+1)
x→2
=(4-1)/(2+1)
=1