Multiple url in same ajax call?is this possible?

You can’t use the same code for 1 request from many pages.

BUT you can send 2 requests. its can be done by copy paste your ajax code or by build a function that gets URL and send request with this URL

function sendMyAjax(URL_address){
    $.ajax({
         type: 'POST',
         url: URL_address,
         data: {
             answer_service: answer,
             expertise_service: expertise,
             email_service: email,
         },
         success: function (data) {
             $(".error_msg").text(data);
         }
     });
};