tolong dong kerjain no 5 ,6, 7 cepat y ...

6.)= 3 (x+3)-2 (x-2)
=3x+9-2x-4
=3x-2x+9-4
=x+5
7.) =3x (6x) × 2x (x-4)
=18x²×2x²-4
=36x²-4
maaf kalo salah^^