Answer
-24
Work Step by Step
$(2\sqrt5 - 6)(9 +3\sqrt5)$
$2\sqrt5*9+2\sqrt5*3\sqrt5-6*9-6*3\sqrt5$
$18\sqrt5 +6*\sqrt{5^2}-54-18\sqrt5$
$6*5-54$
$30-54$
$-24$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 10 - Radical Expressions and Equations - 10-4 Solving Radical Equations - Mixed Review - Page 625: 58
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