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 |