Question 1209800
<pre>
Put the second polynomial under the first polynomial and add
the corresponding terms.  

 x<sup>4</sup> + x<sup>3</sup> +  x<sup>2</sup> + x + 1 
 x<sup>4</sup> - x<sup>3</sup> +  x<sup>2</sup> - x + 1
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2x<sup>4</sup>      + 2x<sup>2</sup>     + 2

Edwin</pre>