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: 20

Answer

$(h-3)(h+9)$.

Work Step by Step

The given polynomial is $=h^2+6h-27$ Standard form is $x^2+bx+c$. We have $b=6$ and $c=-27$. $b$ is positive and $c$ is negative. Factor pair of $-27$, whose sum is $6$:- $-3,9$ The values of $p$ and $q$ are $-3$ and $9$. Hence, the factor of the polynomial is $(h+p)(h+q)=(h-3)(h+9)$. Check:- $=(h-3)(h+9)$ $=h^2+9h-3h-27$ $=h^2+6h-27$ True.
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