國文屋

位置:首頁 > 練習題 > 

若(x+3)(x+m)=x2-2x-15,則m的值為„„„„„„„„„„„„„„„„„„„(         ...

練習題2.28W

問題詳情:

若(x+3)(x+m)=x2-2x-15,則m的值為„„„„„„„„„„„„„„„„„„„(         ...

若 (x+3)(xm)=x2-2x-15,則 m 的值為„„„„„„„„„„„„„„„„„„„(                          )

A.5                                                            B.-5                                                          C.2                                                             D.-2

【回答】

B

知識點:整式的乘法

題型:選擇題

標籤:x2 2x 3x