The given expression is .
Add the polynomials vertically.
(Arrange like terms in columns and combine them)
The sum of polynomials is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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(Arrange like terms in columns and combine them)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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.