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19 April, 04:54

Find the product of 3x^2+x-1 and 4x+5

a. 3x^2+5x+4

b. 12x^3+4x^2-4x

c. 12x^3+19x^2+x-5

d. 12x^3+19x^2+9x-5

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Answers (1)
  1. 19 April, 05:59
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    12x^3 + 19x^2 + x - 5

    Step-by-step explanation:

    (3x^2 + x - 1) (4x + 5)

    12x^3 + 15x^2 + 4x^2 + 5x - 4x - 5 use the Distributive

    Property * to multiply

    each term by each other

    term.

    12x^3 + 19x^2 + x - 5 simply

    *Distribute the first number to 4x, and then by 5. Then distribute x to 4x and 5, and distribute - 1 to 4x and 5. By distribute I mean multiply.
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