3x²-27 ------------ x²+2x-3

=3(x^2-9)/x^2+3x-x-3
=3(3x-3)•(x+3)/x•(x+3)•(x+3)
=3(x-3)•(x+3)/(x-1)•(x+3)
=3(x-3)/(x-1)
=3x-9/1

mf kalok gak jelas bisa ditanyakan
terima kasih