SOLUTION: square root of 9x^2-24x+16. I need to simplify the expression. I'm just not sure if I'm doing it right.

Algebra ->  Rational-functions -> SOLUTION: square root of 9x^2-24x+16. I need to simplify the expression. I'm just not sure if I'm doing it right.      Log On


   

Question 536054: square root of 9x^2-24x+16. I need to simplify the expression. I'm just not sure if I'm doing it right.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%289x%5E2-24x%2B16%29
sqrt%28%283x%29%5E2-2%2A3%2A4%2Ax+%2B%284%29%5E2%29
This is similar to the identity
%28a-b%29%5E2=a%5E2-2ab%2Bb%5E2
sqrt%28%283x-4%29%5E2%29

=3x-4
m.ananth@hotmail.ca