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新gre數(shù)學重要考點：Multiplying Polynomials
Multiplying Polynomials
To multiply two polynomials, open up the first polynomial and multiply the second polynomial with each term.
Example:
If we multiply (3x+2) and (4x2-x+2),we get (3x+2)(4x2-x+2)=3x(4x2-x+1)+2(4x2-x+2)=12x3-3x2+3x+8x2-2x+4=12x3+(-3+8)x2+(3-2)x+4=12x3+5x2+x+4.
Remember:
Do not froget to multiply all the terms.
Repeat distributive law when multiplying polynomials.
新gre數(shù)學重要考點：Subtracting Polynomials
Subtracting Polynomials
To subtract polynomial from another, subtract the like terms. Like terms are those with the same variable and identical power.
Example:
By subtracting (3x+2) from (4x2-x+2),we get 4x2+(-1-3)x+(2-2)=4x2-4x.
Remember:
Only subtract the like terms.
新gre數(shù)學重要考點：Adding Polynomials
Adding Polynomials
To add two polynomials, add the like terms. Like terms are those with the same variables and identical powers.
Example:
By adding (3x+2) and (4x2-x+2), we get 4x2+(3x-x)+(2+2)=4x2+2x+4.
Remember:
Only add the like terms.
新gre數(shù)學重要考點：Polynomials
Polynomials
Any expression with one or more terms is called polynomial.
Example:
3x+2,4x2-x+2,and 4x+3xy+y2are all polynomials.
(3x+5/(2x+y))and sin(3x+2) are not polynomials.
Remember:
Order of a polynomial is the highest power of any variable.
The highest power in an n-th order polynomial is n.
Both monomials and binomials are polynomials of order 1 and 2, respectively.
由于美國數(shù)學基礎教育的難度增加導致數(shù)學考試越來越難，但新gre數(shù)學復習考點都是高中時候?qū)W到的知識點，考生不要過于緊張，把基本概念弄明白，再記住一些新版gre數(shù)學必備的詞匯，那么相信新版gre數(shù)學應該沒有問題。
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