Answer
{$1,8$}
Work Step by Step
Using the rules of factoring trinomials, we obtain:
$x^{2}-9x+8=0$
$x^{2}-1x-8x+8=0$
$x(x-1)-8(x-1)=0$
$(x-1)(x-8)=0$
$(x-1)=0$ and $(x-8)=0$
$x=1$ and $x=8$
Therefore, the solution set is {$1,8$}.
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 10 - Quadratic Equations - 10.1 - Quadratic Equations - Problem Set 10.1 - Page 442: 7
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