<PRE><B>Question 214993</B>
Assume x can represent any real number. Use absolute value notation when necessary.


Almost correct...need to continue and complete the steps.


{{{sqrt(x^2-18x+81)=sqrt((x-9)^2)=abs(x-9)}}}


I hope the above steps were helpful. 


For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.


And good luck in your studies!


Respectfully,
Dr J</PRE>