Add the following polynomials, then place the answer in the proper location on the grid. write the answer in descending powers of x. find the sum of (5x3 + 3x2 - 5x + 4) and (8x3 -5x2 + 8x + 9).

ANSWER


EXPLANATION

The first polynomial is


The second polynomial is


If we add the two polynomials we obtain,



Next we group like terms to obtain,



We simplify the to obtain,



This is the sum of the two polynomials in descending powers of


Descending means from the highest power to the least.