Answer
$x^2-6x+9$
Work Step by Step
$$(x-3)^2$$ $$=(x-3)(x-3)$$ $$=(x\times x)+(x\times (-3))+(-3\times x)+(-3\times (-3))$$ $$=x^2-3x-3x+9$$ $$=x^2-6x+9$$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.4 - Page 61: 45
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