网址:http://m.1010jiajiao.com/timu_id_694161[举报]
是下列哪个多项式分解因式的结果( )
A.4x2+y2 B.-4x2+y2 C.-4x2-y2 D.4x2-y2
A.4x2-y2
B.4x2+y2
C.-4x2-y2
D.-4x2+y2
A. x2m-y2n
B .x2m-2xmyn+y2n
C. x2m-2xmyn-y2n
D. xm-2xmyn+yn