Answer
$k^2+4k-5$.
Work Step by Step
The given expression is
$=(k+5)(k-1)$
Use the FOIL method.
$=k(k)+k(-1)+5(k)+5(-1)$
Multiply.
$=k^2-k+5k-5$
Combine like terms.
$=k^2+4k-5$
Hence, the product is $k^2+4k-5$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 7 - Polynomial Equations and Factoring - 7.2 - Multiplying Polynomials - Exercises - Page 369: 23
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