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How do you add or subtract polynomials?

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1 Answer

Since each section is separated by a plus sign, all you need to do is line up your like terms and add their coefficients... 2x^2 - 5x - 1 3x^2 - 7x + 3 -5x^2 + x + 1 --------------- Combine: (2 + 3 - 5) = 0 Combine: (-5 -7 + 1) = -11 Combine: ( -1 + 3 + 1) = 3 Final Answer: -11x + 3

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Yes Ma'am. If there is no number in front of a variable, it automatically means a 1(One) is its coefficient.

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