algebra
posted by I NEED HELPPPP!* on .
CAN SOMEONE PLEASE HELPPP!? I NEED HELP IN ALGEBRA, SIMPLIFYING RADICALS! SIMPLIFY THE SQUARE ROOT OF 45a SQUARED!

I believe the answer is 3a square root of 5a.

√)45a^2)
=√9 * √5 * √a^2
= 3a√5 
answer is actually : 3a square root of 5.
45a^2 simplied is 9a^2 x 5
square root of 9a^2 is 3a.
Square root of 5 is radical 5.
Squaring your answer would check to see if you have the correct answer.
Thus mine is the correct one. Sarah was close. 
oops, my bad. simple mistake.

thank you sarah reiny and chris !