Answer
$0$
Work Step by Step
$(3-\sqrt{13})^{2}=3^{2}-2\cdot 3\cdot\sqrt{13}+(\sqrt{13})^{2}\\\\=9+13-6\sqrt{13}\\\\=22-6\sqrt{13}$
$f(3-\sqrt{13})=22-6\sqrt{13}-6(3-\sqrt{13})-4$
$= 22-6\sqrt{13}-18+6\sqrt{13}-4$
... add like terms
$=0$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 7 - Section 7.5 - Multiplying with More Than One Term and Rationalizing Denominators - Exercise Set - Page 551: 113
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.
