Answer
$a =1, 6$
Work Step by Step
$a = \sqrt {7a-6}$
$a^2 = (\sqrt {7a-6})^2$
$a^2=7a-6$
$a^2-7a+6=7a-6-7a+6$
$(a-6)(a-1) = 0$
$a-6=0$
$a=6$
$a-1=0$
$a=1$
$a^2=7a-6$
$1^2=7*1-6$
$1=7-6$
$1=1$
$a^2=7a-6$
$6^2=7*6-6$
$36 = 42-6$
$36= 36$
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 - Practice and Problem-Solving Exercises - Page 624: 46
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