问题 解答题

将下列各式因式分

(1)m3-8m2+16m

(2)(x2+y22-4x2y2

答案

(1)m3-8m2+16m,

=m(m2-8m+16),

=m(m-4)2

(2)(x2+y22-4x2y2

=(x2+y2+2xy)(x2+y2-2xy),

=(x+y)2(x-y)2

单项选择题
单项选择题