## Intermediate Algebra (6th Edition)

Published by Pearson

# Chapter 7 - Section 7.6 - Radical Equations and Problem Solving - Graphing Calculator Explorations: 4

#### Answer

$16-8\sqrt 7x +7x$

#### Work Step by Step

$(4-\sqrt 7x)(4-\sqrt 7x)$ Original problem FOIL $(4)(4)+(4)(-\sqrt 7x)+(4)(-\sqrt 7x)+(-\sqrt 7x)(-\sqrt 7x)$ Or $16-4\sqrt 7x-4\sqrt 7x+7x$ Combine like terms $16-8\sqrt 7x +7x$

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.