Answer
$(2x - 1)(x + 4)$
Work Step by Step
Separate the middle term into two separate terms that can be factored with the outer terms:
$2x^2 + 7x - 4$
$2x^2 + 8x - x - 4$
$2x(x + 4) -1(x + 4)$
$(2x - 1)(x + 4)$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 1 - Section 1.3 - Algebraic Expressions - 1.3 Exercises - Page 34: 102
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