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[GRE数学] 英文版GRE数学考试重要考点(2)

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  新gre数学重要考点: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 and ,we get =3x+2=12x3-3x2+3x+8x2-2x+4=12x3+x2+x+4=12x3+5x2+x+4.

  Remember:

  Do not froget to multiply all the terms.

  Repeat distributive law when multiplying polynomials.

  新gre数学重要考点: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 from ,we get 4x2+x+=4x2-4x.

  Remember:

  Only subtract the like terms.

  新gre数学重要考点: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 and , we get 4x2++=4x2+2x+4.

  Remember:

  Only add the like terms.

  新gre数学重要考点:Polynomials

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