Question 34169
I am assuming you need this factored.
It follows the pattern of "The difference of two squares".
It looks like this:
{{{ (x-y)(x+y)=x^2 - y^2 }}}
So ....
{{{ 9a^2-64b^2 }}}
Ask yoursef:
What is the square root of each term?
{{{ (3a-8b)(3a+8b) }}}
That's it.