(a²-6a+9分之a²+2a)除以(a²-3a分之a²-4)-(a-2分之a)
=[a(a+2)]/(a-3)²÷[(a-2)(a+2)]/[a(a-3)]-a/(a-2)
=a²/(a-2)(a-3)-a/(a-2)
=(a²-a²+3a)/(a-2)(a-3)
=3a/(a-2)(a-3)
(a²-6a+9分之a²+2a)除以(a²-3a分之a²-4)-(a-2分之a)
=[a(a+2)]/(a-3)²÷[(a-2)(a+2)]/[a(a-3)]-a/(a-2)
=a²/(a-2)(a-3)-a/(a-2)
=(a²-a²+3a)/(a-2)(a-3)
=3a/(a-2)(a-3)