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Algebra
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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The length of a rectangle is (4x^2 + 2x - 1) units, and its width is (3x^3 - x + 4) units. Part A: What is the area of the rectangle? Show your work. (5 points) Part B: Does the answer for Part A show that polynomials are closed under an operation? Justify your answer. (3 points) Part C: What is the degree and classification of the expression obtained in Part A? (2 points)
hello?
(4x^2 + 2x - 1) * (3x^3 - x + 4)

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Other answers:

this is for part A?
yes multiply second parentheses by 4x^2 , then by + 2x, then by -1. Then simplify like terms.
the first term will be 12x^5
wait whats part B?
the result of the multiplication will be another polynomial supporting the fact that polynomials are close under multiplication.

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