问题
解答题
分解因式:
(1)-3x2+6xy-3y2;
(2)16x4-1.
答案
(1)原式=-3(x2-2xy+y2)
=-3(x-y)2;
(2)原式=(4x2+1)(4x2-1)
=(4x2+1)(2x+1)(2x-1).
分解因式:
(1)-3x2+6xy-3y2;
(2)16x4-1.
(1)原式=-3(x2-2xy+y2)
=-3(x-y)2;
(2)原式=(4x2+1)(4x2-1)
=(4x2+1)(2x+1)(2x-1).