Help. How do you multiply polynomials

asked Jul 24, 2020 152k views

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5 votes

Answer:

B
3x^4 + 7x^2 - 20

Explanation:

To find the total height, multiply the two expressions.

$(x^2 + 4)(3x^2 - 5)\\3x^4 + 12x^2 -5x^2 - 20\\3x^4 + 7x^2 - 20$

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