Answer
28$r^{2}$ + r - 2
Work Step by Step
1. FOIL
(4r - 1)(7r + 2) = 4r(7r) + 4r(2) - 1(7r) - 1(2)
2. Multiply
28$r^{2}$ + 8r - 7r - 2
3. Add like terms.
28$r^{2}$ + r - 2
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter R - Section R.3 - Polynomials - R.3 Exercises - Page 29: 45
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