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17 November, 18:53

Use the grouping method to factor the polynomial below completely.

3x3 + 9x2 + 4x + 12

O A. (3.2 + 4) (x+4)

O B. (3x2+3) (x + 4)

O c. (3x2 + 4) (x+3)

O D. (3x + 3) (x+3)

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  1. 17 November, 19:20
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    C. (3x^2+4) (x+3)

    Step-by-step explanation:

    3x^3+9x^2+4x+12

    = (3x^3+9x^2) + (4x+12)

    =3x^2 (x+3) + 4 (x+3)

    = (3x^2+4) (x+3)

    Therefore, C. (3x^2+4) (x+3)
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