Google Code... why is this so difficult?

I am having a terrible time trying to get a simple anwer on what must be an extremely common question:  How and where do I place the google conversion code on a "thank you page" that I set up in Marketo?  Does it go in the body of the page? In a text box?  In the template?  Any help much appreciated.  My code looks like this:

<!-- Google Code for Report Download Conversion Page -->
<script type="text/javascript">
/* <![CDATA[ */
var google_conversion_id = 9xxx9;
var google_conversion_language = "en";
var google_conversion_format = "2";
var google_conversion_color = "fffxxxfff";
var google_conversion_label = "NblrCKxxxx1QM";
var google_conversion_value = 0;
var google_remarketing_only = false;
/* ]]> */
</script>
<script type="text/javascript" src="//www.googleadservices.com/pagead/conversion.js">
</script>
<noscript>
<div style="display:inline;">
<img height="1" width="1" style="border-style:none;" alt="" src="//www.gXXXXN&amp;script=0"/>
</div>
</noscript>