On 11/05/14 16:50, munazah zaidi wrote: > i want help 3 and -3 are square roots of 9. Did that help? If not, you will need to be a lot more specific about what kind of help you want. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.flickr.com/photos/alangauldphotos