Use the grouping method to factor the polynomial below completely. 3x^3 + 9x^2 + 4x + 12

1 answer:

Alex4 years ago

4 0

Answer:

$(x+3)(3x^{2}+4)$

Step-by-step explanation:

$3x^{3}+9x^{2}+4x+12\\3x^{2}(x+3)+4(x+3)\\(x+3)(3x^{2}+4)$

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