Pretty Forms Designer provides a method to create a single form with a form header & questions in multiple languages. You don't need to create a separate form for each language. Users only need to create a form in one language, then add the additional languages & the respective content like form header or questions for the additional languages. Just choose a language, and it will automatically change its form content in the selected language. 

Pretty Forms Designer not only provides a method to write content in multiple languages, it also provides the Google Translate button, which is very useful to fastly translate their form's content into the chosen language.

You only need to allow this feature under the settings.

Users can insert equations or formulas, or even symbols in their form. It can be inserted in the questions and also in the provided options. This feature is very useful for teachers & students who are willing to make Quizzes in Google forms. The equations could be related to Physics, Chemistry, Maths, or any other subjects that can be added to the form.