新gre数学重要考点：Roots of Polynomial
<p> 2014新<span word="gre">gre</span>考试实施以来，不仅对写作部分茫然不知所措，就连我们所擅长的数学也甚是担忧，相信这其中的原因还是由于考生在新<span word="gre">gre</span>数学复习时没有把基础打牢。如果新版<span word="gre">gre</span>数学基本考点都没有复习到，如何能拿到分数呢?所以说，想要新版<span word="gre">gre</span>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。</p><p> 今天针对新版<span word="gre">gre</span>数学复习，小编给大家整理的是关于<span word="Roots">Roots</span> <span word="of">of</span> <span word="Polynomial">Polynomial</span>的相关内容，这些概念在考试中一定会考到的。希望考生能再接再厉，取得一个好成绩，突破新版<span word="gre">gre</span>数学难的困境。</p><p> <span word="Roots">Roots</span> <span word="of">of</span> <span word="Polynomial">Polynomial</span></p><p> <span word="The">The</span> <span word="number">number</span> <span word="c">c</span> <span word="is">is</span> <span word="a">a</span> <span word="root">root</span> <span word="of">of</span> <span word="a">a</span> <span word="polynomial">polynomial</span> <span word="p">p</span>, <span word="if">if</span> <span word="p">p</span>=0.</p><p> <span word="An">An</span> <span word="n">n</span>-<span word="th">th</span> <span word="order">order</span> <span word="polynomial">polynomial</span> <span word="has">has</span> <span word="n">n</span> <span word="complex">complex</span> <span word="roots">roots</span>.</p><p> <span word="Example">Example</span>:</p><p> 2 <span word="is">is</span> <span word="a">a</span> <span word="root">root</span> <span word="of">of</span> <span word="polynomial">polynomial</span> <span word="p">p</span>=<span word="x">x</span>-2,<span word="since">since</span> <span word="p">p</span>=2-2=0.</p><p> 1 <span word="is">is</span> <span word="a">a</span> <span word="root">root</span> <span word="of">of</span> <span word="polynomial">polynomial</span> <span word="p">p</span>=<span word="x">x</span>2-3<span word="x">x</span>+2,<span word="since">since</span> <span word="p">p</span>=12-31+2=0.</p><p> <span word="Remember">Remember</span>:</p><p> <span word="A">A</span> <span word="polynomial">polynomial</span> <span word="may">may</span> <span word="not">not</span> <span word="have">have</span> <span word="any">any</span> <span word="real">real</span> <span word="root">root</span>:<span word="p">p</span>=<span word="x">x</span>2+1 <span word="does">does</span> <span word="not">not</span> <span word="have">have</span> <span word="any">any</span> <span word="real">real</span> <span word="root">root</span>, <span word="since">since</span> <span word="p">p</span>=1 <span word="for">for</span> <span word="all">all</span> <span word="real">real</span> <span word="x">x</span>.</p><p> 由于美国数学基础教育的难度增加导致数学考试越来越难，但新<span word="gre">gre</span>数学复习考点都是高中时候学到的知识点，考生不要过于紧张，把基本概念弄明白，再记住一些新版<span word="gre">gre</span>数学必备的词汇，那么相信新版<span word="gre">gre</span>数学应该没有问题。</p>
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