(1)计算:(2x2y)(-xy2z)3(3x2)(2)因式分解:-8ax2+16axy-8ay2(3)因式分解:(x2-3)2-4x2.
分解因式:(1);(2).
因式分解:x2+3x(x-3)-9
因式分解 (1) (2) (3) (4) (5) (6)