因式分解: (1)-3x2+6xy-3y2=_; (2)3a2-12ab+12b2=_; (3)2a3-8a2+8a=_; (4)16-8(x-y)+(x-y)2=_; (5)x(x-1)-3x+4=_.
问题描述:
因式分解:
(1)-3x2+6xy-3y2=______;
(2)3a2-12ab+12b2=______;
(3)2a3-8a2+8a=______;
(4)16-8(x-y)+(x-y)2=______;
(5)x(x-1)-3x+4=______.
答
(1)-3x2+6xy-3y2,=-3(x2-2xy+y2),=-3(x-y)2;(2)3a2-12ab+12b2,=3(a2-4ab+4b2),=3(a-2b)2;(3)2a3-8a2+8a,=2a(a2-4a+4),=2a(a-2)2;(4)16-8(x-y)+(x-y)2=(4-x+y)2;(5)x(x-1)-3...