把下列各式进行因式分解.
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把下列各式进行因式分解.
(1)2m3-32m;
(2)a2(x-y)+b2(y-x).
(1)2m3-32m;
(2)a2(x-y)+b2(y-x).
(1)2m3-32m,
=2m(m2-16),
=2m(m+4)(m-4);
(2)a2(x-y)+b2(y-x),
=a2(x-y)-b2(x-y),
=(x-y)(a2-b2),
=(x-y)(a+b)(a-b).
=2m(m2-16),
=2m(m+4)(m-4);
(2)a2(x-y)+b2(y-x),
=a2(x-y)-b2(x-y),
=(x-y)(a2-b2),
=(x-y)(a+b)(a-b).