(x+5y)(x-5y)等于
问题描述:
(x+5y)(x-5y)等于
A.25y2-x2
B.x2+25y2
C.x2-25y2
D.x2+10xy+25y2
答
c
(x+5y)(x-5y)等于
A.25y2-x2
B.x2+25y2
C.x2-25y2
D.x2+10xy+25y2
c