simplify the radical expression:

squared 17 (end squared) * 5 squared 64x

explain the steps.

First, we simplify each part separately.

1) Simplify squared 17:
squared 17 = 17^2 = 289

2) Simplify 5 squared:
5^2 = 25

3) Simplify 64x:
This is already simplified as it is, so we leave it as 64x.

Now, we multiply the simplified parts together:
289 * 25 * 64x = 185600x

So, the simplified radical expression is 185600x.