In this tutorial you are shown how to solve a quadratic equation by using the method of completing the square. This is often used when a quadratic equation does not factorise.

#### Example in the video

Solve the following giving your answers in exact form:

Don Aftab SulemanSeptember 26, 2016 at 2:05 pmHello sir, I am Aftab Suleman reporting live from the warm heart of Africa, and I really love this website as it helps me understand a lot, but I take A levels Math with Cambridge and I see that Cambridge is removed from the tutorials, I would appreciate if Cambridge syllabus is put back again so that I may achieve a better grade for math in the future, PLZ do give feedback on my query

thank you

have A blessed day

Stuart SiddersSeptember 27, 2016 at 8:11 amThe Cambridge exams are listed under International exams CIE. I hope this helps.

http://www.examsolutions.net/international-exams/cie/

James SmithNovember 8, 2016 at 5:56 pmWhy do we only get 1 value rather two with factorising?

James SmithNovember 8, 2016 at 5:56 pmrather than*

Stuart the ExamSolutions GuyNovember 8, 2016 at 6:17 pmAll these examples show two solutions for x.

MDecember 20, 2016 at 9:40 pmThank you, this was so helpful. However, how did you get 25/2 and 31/4? in question 3?

Thanks.

Stuart the ExamSolutions GuyDecember 21, 2016 at 8:56 amBasic fractions. When you expand the bracket, 2 x 25/4 = 50/4 = 25/2. Then 25/2 + 3 = 25/2 + 6/2 = 31/2.

Joe LondonJanuary 8, 2017 at 3:36 pmThanks:)