How do you clear search history on yoahoo and google?

Bought PC at yard sale and needless ';childless'; searches on the internet search bar on Yahoo.How do you clear search history on yoahoo and google?
there's an arrow down at the side of each bar and click it.. then click on clear history..How do you clear search history on yoahoo and google?
You need to clear or disable Auto Complete. This saves all previous searches in your search bar. Here's how to fix the problem:





For Internet Explorer: Click on Tools. Then Internet Options. Click on Content and then Auto Complete. Then click on Clear Forms. This will erase your search history. If you don't want things showing up again in your search history then deselect the Auto Complete options at the top. Be sure to select apply or ok at the bottom.
On both, click on drop down arrow on the right and it will have clear history, click, done.