This is a job for the canonical tag. in your case you would need to add to the head
<link rel="canonical" href="https//example.com/thispage/random text" />
Assuming thats how you want it to appear in google search results
It's a powerful and often underused tag within websites, It helps remove duplicate content and also cut down the variations of URLS for the same page. Its a clear signal to google which is the correct page.
Consider the following as well
- http://example.com
- https://example.com
- http://www.example.com
- https://www.example.com
- https://www.Example.com
On most websites all the above would render the same page but the url is different, So you would have 5 versions of the same page producing by its very nature duplicate content.
The use of a canonical tag tells google which is the correct one.
And yes I did also mean to put in Example.com with a capital E as that is still a separate page in googles eyes, Seeing as you have no control how users may link to you every page on your site should have a self referencing canonical tag.
Hope that makes sense.