You can't simultaneously set the [src] attribute and include contents for the <script> element.
If you need two scripts, you need to use two separate <script> elements.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
jQuery(function($) {
alert("hello");
});
</script>
As per the HTML5 spec on the <script> element:
If there is no src attribute, depends on the value of the type attribute, but must match script content restrictions.
If there is a src attribute, the element must be either empty or contain only script documentation that also matches script content restrictions.