问题
计算题
将下列各式因式分解:
(1)m3﹣8m2+16m
(2)(x2+y2)2﹣4x2y2
答案
解:(1)m3﹣8m2+16m,
=m(m2﹣8m+16),
=m(m﹣4)2;
(2)(x2+y2)2﹣4x2y2,
=(x2+y2+2xy)(x2+y2﹣2xy),
=(x+y)2(x﹣y)2.
将下列各式因式分解:
(1)m3﹣8m2+16m
(2)(x2+y2)2﹣4x2y2
解:(1)m3﹣8m2+16m,
=m(m2﹣8m+16),
=m(m﹣4)2;
(2)(x2+y2)2﹣4x2y2,
=(x2+y2+2xy)(x2+y2﹣2xy),
=(x+y)2(x﹣y)2.