Question 74124
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Add: 5b^3-8b+2b^2 and 3b^2-7b^3+5b


      5b^3 - 8b + 2b^2
    + 3b^2 - 7b^3 + 5b
   ______________________


Note: You can online add like terms. Terms which are exactly the same
      aside from the coefficient.

       5b^3 and - 7b^3 are like terms
        2b^2 and 3b^2 are like terms too
         -8b and 5b are like terms.

Arrange your expressions like this

           5b^3 + 2b^2 - 8b
       +  -7b^3 + 3b^2 + 5b
      ______________________
          -2b^3 + 5b^2 - 3b

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