Big Ideas Math - Algebra 1, A Common Core Curriculum

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 - 7.5 - Factoring x 2 + bx + c - Exercises - Page 389: 19

Answer

$(y-6)(y+8)$.

Work Step by Step

The given polynomial is $=y^2+2y-48$ Standard form is $x^2+bx+c$. We have $b=2$ and $c=-48$. $b$ is positive and $c$ is negative. Factor pair of $-48$, whose sum is $2$:- $-6,8$ The values of $p$ and $q$ are $-6$ and $8$. Hence, the factor of the polynomial is $(y+p)(y+q)=(y-6)(y+8)$. Check:- $=(y-6)(y+8)$ $=y^2+8y-6y-48$ $=y^2+2y-48$ True.
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