Simplify the expression

- root of 36/49

The expression simplifies to -6/7.

To simplify the expression -√(36/49), we can start by simplifying the square root of the numerator and denominator separately.

First, let's simplify the numerator:
√36 can be simplified to 6, as the square root of 36 is equal to the number whose square is 36, which is 6.

Next, let's simplify the denominator:
√49 can be simplified to 7, as the square root of 49 is equal to the number whose square is 49, which is 7.

Now, let's put the simplified numerator and denominator together:
The expression -√(36/49) simplifies to -6/7.

Therefore, the simplified form of -√(36/49) is -6/7.