Factor the trinomial 3x2 + 16x + 21

asked Mar 1, 2021 156k views

5 votes

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4 votes

Answer:

(3x+7)(x+3)

Explanation:

Factors 3x^2+16x+21

3x^2+16x+21

=(3x+7)(x+3)

Brad Rem answered Mar 2, 2021

7.2k points

2 votes

Answer:

$3 {x}^(2) + 16x + 21 \\ 3 {x}^(2) + 9x + 7x + 21 \\ 3x(x + 3) + 7(x + 3) \\ = (3x + 7)(x + 3)$

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