问题 解答题

ax8-5ax4-36a.

答案

ax8-5ax4-36a,

=a(x8-5x4-36),

=a(x4-9)(x4+4),

=a(x2+3)(x2-3)(x4+4),

=a(x2+3)(x-

3
)(x+
3
)(x4+4).

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