若(x+3)(x+m)=x2-2x-15,则m的值为„„„„„„„„„„„„„„„„„„„( ...
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问题详情:
若 (x+3)(x+m)=x2-2x-15,则 m 的值为„„„„„„„„„„„„„„„„„„„( )
A.5 B.-5 C.2 D.-2
【回答】
B
知识点:整式的乘法
题型:选择题
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问题详情:
若 (x+3)(x+m)=x2-2x-15,则 m 的值为„„„„„„„„„„„„„„„„„„„( )
A.5 B.-5 C.2 D.-2
【回答】
B
知识点:整式的乘法
题型:选择题