问题
填空题
把4x4y2-5x2y2-9y2分解因式的结果是______.
答案
4x4y2-5x2y2-9y2,
=y2(4x4-5x2-9),
=y2(x2+1)(4x2-9),
=y2(x2+1)(2x+3)(2x-3).
把4x4y2-5x2y2-9y2分解因式的结果是______.
4x4y2-5x2y2-9y2,
=y2(4x4-5x2-9),
=y2(x2+1)(4x2-9),
=y2(x2+1)(2x+3)(2x-3).