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To add polynomials you can do one of two things. You can opt to group like terms, this is done horizontally. Or you can write the like terms in a column.



Remember: In order for polynomials to be like terms, they have to have the same exponent.



This will align all of the like terms so you can solve them vertically. When you subtract a polynomial you have to add its additive inverse. Once you find the additive inverse you

have to continue by grouping the like terms. Now you will be able to solve the rest of the problem. For subtraction, you can also decide whether you want to use the vertical or

horizontal method.



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Now you try:










Links:
http://www.studyzone.org/mtestprep/math8/g/8addsubpolyl.cfm
http://www.mathsisfun.com/algebra/polynomials-adding-subtracting.html
http://www.purplemath.com/modules/polyadd.htm