Ò»¡¢Ñ¡ÔñÌ⣨5£§¡Á2=10£§£©
2.ÒÑÖªf(x)=(x¨Ca)(x¨Cb)¨C2£¨ÆäÖÐa£¼b £¬ÇÒ¦Á¡¢¦ÂÊÇ·½³Ìf(x)=0µÄÁ½¸ù£¨¦Á£¼¦Â £¬ÔòʵÊýa¡¢b¡¢¦Á¡¢¦ÂµÄ´óС¹ØϵΪ(    )
A.¦Á£¼a£¼b£¼¦Â            B.¦Á£¼a£¼¦Â£¼b
C.a£¼¦Á£¼b£¼¦Â            D.a£¼¦Á£¼¦Â£¼b

²é¿´ÏêϸÄÚÈÝÇëµã»÷