题目内容

已知方程x2+2x-3=0和2x2+5x-3=0只有一个公共根，则以其他两根为根的方程是（）。

A. x2+3x+2=0
B. 2x2-3x+1=0
C. 3x2+2x+1=0
D. x2+2x+3=0
E. 以上答案均不正确

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