Answer
$$(12x-1)(x+12).$$
Work Step by Step
For the polynomial
$$
12x^2+143x-12
$$
we check the factors of $ac=12(-12)=-144$. The only factors that can give the right middle term are $-1$ and $144$, as follows
$$12x^2+143x-12 =(12x-1)(x+12).$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Review - Page 358: 34
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