You can
put this solution on YOUR website! -5x^6-13x^5-19
+ 3x^6+9x^5 +3
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Make sure your LIKE VARIABLES ARE ALL IN LINE!!!
-5x^6+3x^6=-2x^6
-13x^5+9x^5=-4x^5
-19+3= -16
Therefore, the answer is...
-2x^6-4x^5-16. (a.)
Hope this helps!!!
integral13