Ответ:
2) (3х-2у)(3х+2у-1)
4) 6+8у)(12-8у)
6) (5-у)(7+у)
8) (-4-5х)(12-5х)
Пошаговое объяснение:
2) 9х²-4у²-3х+2у= (9х²-4у²)-(3х-2у)=(3х-2у)(3х+2у) -(3х-2у)= (3х-2у)(3х+2у-1)
4) 81- (3-8у)²= (9-3+8у)(9+3-8у)=(6+8у)(12-8у)
6) 36 - (у+1)²= (6-у-1)(6+у+1)= (5-у)(7+у)
8) (4-5х)²-64= (4-5х-8)(4-5х+8)=(-4-5х)(12-5х)