Answer
$$(5x+2)(x-6).$$
Work Step by Step
For the polynomial
$$
5x^2-28x-12
$$
we check the factors of $ac=5(12)=60$.
The only factors that can give the right middle term are $2$ and $-30$, as follows
$$5x^2-28x-12=(5x+2)(x-6).$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Section 10.6 - Factoring General Trinomials - Exercise - Page 356: 1
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