题目内容
因式分解
(1)a4-16
(2)6x2y-12xy2+6y3.
(1)a4-16
(2)6x2y-12xy2+6y3.
(1)a4-16
=(a2+4)(a2-4)
=(a2+4)(a+2)(a-2);
(2)6x2y-12xy2+6y3
=6y(x2-2xy+y2)
=6y(x-y)2.
=(a2+4)(a2-4)
=(a2+4)(a+2)(a-2);
(2)6x2y-12xy2+6y3
=6y(x2-2xy+y2)
=6y(x-y)2.
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