Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 10 - Section 10.6 - Factoring General Trinomials - Exercise - Page 356: 28

Answer

$(5x+2)(2x-1)$

Work Step by Step

For the polynomial $$ 10x^2 -x -2 $$ we check the factors of $ac=10(-2)=-20$. The only factors that can give the right middle term are $4$ and $-5$, as follows $$ 10x^2 -x -2=(5x+2)(2x-1) .$$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.