x 2 +ax+6分解因式的结果是(x-1)(x+2),则方程x 2 +ax+b=0的二根分别是什么?
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A.
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B.
The attempts to intimidate him merely strengthened his resolve.
C.
After the divorce, he resolved never to marry again.
D.
She made a resolve not to think about him any longer.
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