How do I stop bing from hijacking my google browser on Safari

whenever i look something up on google using safari it quickly redirects to www.trovi and then straight to a bing search. I just need to remove this. How do I? When look under preferences and extensions it shows that I have none and when I look in applications they are all apple downloaded not internet downloaded. My trash is empty and nothing seems to be wrong except for this!

please help apple! thanks