Try another version of this question
Add the following radical expressions where `a>0`.
`sqrt(9 a)+sqrt(81 a)+sqrt(16 a)`
`sqrt(9 a)+sqrt(81 a)+sqrt(16 a)`
Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question
`16*sqrt(a)`