Answer
$d=7$ or $d=-3$
Work Step by Step
$5d^2-20d=105$
$5d^2-20d-105=0$
$5d^2+15d-35d-105=0$
$5d(d+3)-35(d+3)=0$
$(5d-35)(d+3)=0$
$5(d-7)(d+3)=0$
$d-7=0$ or $d+3=0$
$d=7$ or $d=-3$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 11 - Rational Expressions and Functions - Get Ready! - Page 661: 16
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
