Final answer:
The expression (-3V27) (V-81) simplifies to 27.
Step-by-step explanation:
To simplify the expression (-3V27) (V-81), we can rewrite the square root and rewrite the expression as (9√3) √(81). Taking the square root of 9 gives us 3, and the square root of 81 also gives us 9.
So the expression simplifies further to 3 * 9 = 27. Therefore, the simplified expression is 27.