Thực hiện các phép tính sau: g) 2x/ 9-x^2+1/x-3-1/x+3 .

g, 2x9−x2+1x−3−1x+3

=−2xx2−9+1x−3−1x+3

=−2xx+3x−3+1x−3−1x+3

=−2xx+3x−3+x+3x+3x−3−x−3x+3x−3

=−2x+x+3−x−3x+3x−3

=−2x+x+3−x+3x+3x−3

=−2x+6x+3x−3

=−2x−3x+3x−3=−2x+3