A:m2﹣16=(m﹣4)(m+4)
B:m2+4m=m(m+4)
C:m2﹣8m+16=(m﹣4)2
D:m2+3m+9=(m+3)2
I've met her on several o____ recently.
王强的身高是180厘米,比赵芳高12.5%.赵芳的身高是____厘米.