Express in simplest radical form.square root of, 7, x, to the power 9 , end square root7x 9 ​

The expression you provided seems to be a bit unclear, but I'm assuming you're asking for the simplification of the square root of 7x to the power of 9.

Here's how you can simplify it:

1. Break down the expression inside the square root into parts that are squares. In this case, (7x^9) can be written as (7^2 * x^8 * 7x).

2. The square root of 7^2 is 7, the square root of x^8 is x^4.

3. The square root of 7x cannot be simplified further, so it stays under the square root.

So, the simplified form of the square root of 7x to the power of 9 is 7x^4 * sqrt(7x).