题目内容
分解因式:
(1)-3x2+6xy-3y2;
(2)16x4-1.
(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).
=-3(x-y)2;
(2)原式=(4x2+1)(4x2-1)
=(4x2+1)(2x+1)(2x-1).
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