Question: please help asap and please explain in simple terms. Part C: Do the answers for Part A and Part B show that the polynomials are

please help asap and please explain in simple terms.

Part C:Do the answers for Part A and Part B show that the polynomials are closed under addition and subtraction? Justify your answer.

Part A answer: 7x^2 + 2x + 1

Part B answer: 4x^3 - 10x^2 - 7

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