SOLUTION: hi i am confused on the subtracting of polynomials (5x^5-5x^4-3x^3-5)-(9x^5-3x^4+7x^3-7) the book does not give enough explanation thanks a lot

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Question 83280This question is from textbook
: hi i am confused on the subtracting of polynomials
(5x^5-5x^4-3x^3-5)-(9x^5-3x^4+7x^3-7) the book does not give enough explanation
thanks a lot This question is from textbook

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(5x^5-5x^4-3x^3-5)-(9x^5-3x^4+7x^3-7)
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Comment: You can only add or subtract "like" terms:
=(5x^5-9x^5)+(-5x^4+3x^4)+(-3x^3-7x^3)+(-5+7)
= -4x^5 -2x^4 -10x^3 +2
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Cheers,
Stan H.