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The number c is a root of a polynomial p(x), if p(c)=0.
An n-th order polynomial has n complex roots.
Example:
2 is a root of polynomial p(x)=x-2,since p(2)=2-2=0.
1 is a root of polynomial p(x)=x2-3x+2,since p(1)=12-3*1+2=0.
Remember:
A polynomial may not have any real root:p(x)=x2+1 does not have any real root, since p(x)>=1 for all real x.
有一部分考生认为新GRE数学具有一定的难度，这其中的原因是由于考生在复习时没有把新GRE数学的基础打牢。想要新GRE数学考好，复习的时候一定要把基本概念和重要考点都弄扎实。祝大家都能取得理想成绩!
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The number c is a root of a polynomial p(x), if p(c)=0.
An n-th order polynomial has n complex roots.
Example:
2 is a root of polynomial p(x)=x-2,since p(2)=2-2=0.
1 is a root of polynomial p(x)=x2-3x+2,since p(1)=12-3*1+2=0.
Remember:
A polynomial may not have any real root:p(x)=x2+1 does not have any real root, since p(x)>=1 for all real x.
有一部分考生认为新GRE数学具有一定的难度，这其中的原因是由于考生在复习时没有把新GRE数学的基础打牢。想要新GRE数学考好，复习的时候一定要把基本概念和重要考点都弄扎实。祝大家都能取得理想成绩!
