Another u-substitution example
This original Khan Academy video was translated into isiZulu by Wazi Kunene. The translation project was made possible by ClickMaths: http://www.clickmaths.org
If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.