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.
有一部分考生認為新GRE數(shù)學具有一定的難度，這其中的原因是由于考生在復習時沒有把新GRE數(shù)學的基礎(chǔ)打牢。想要新GRE數(shù)學考好，復習的時候一定要把基本概念和重要考點都弄扎實。祝大家都能取得理想成績!