Question 78896
{{{(sqrt(75a^2))/(sqrt(5))}}}
The first step is to recognize that {{{sqrt(a^2)=a}}}, so you can rewrite it as:
{{{(a*sqrt(75))/(sqrt(5))}}}
Now, you need to see that {{{75=5*4*4}}}, so you can also pull out a 4 from under the radical:
{{{(4a*sqrt(5))/(sqrt(5))}}}
Finally, cancel out the {{{sqrt(5)}}} term, and you are done:
{{{4a}}}
Good Luck,
tutor_paul@yahoo.com