Quadratic simultaneous equation by substitution - GCSE maths

#GCSE #simultaneousequations #GCSEmaths Join this channel to get access to perks:    / @3minutemaths   This question is fairly challenging and aimed at around grade 8 GCSE maths. It deals with solving quadratic simultaneous equations by substitution, and will need good algebra confidence. The whole idea is to, in this case, make x the subject, and 'substitute' into the circle equation. Solve: x - 2y = 1 x^2 + y^2 = 13 ​Visit ‪@3minutemaths‬ for a full range of quick reminder and GCSE maths walkthrough videos. Visit http://www.3minutemaths.co.uk for quick reminder High School GCSE mathematics videos - or subscribe to the channel. You can download the questions from http://www.3minutemaths.co.uk - along with many others aiming to offer quick reminders of the key topics. I hope the video helps and please do leave a comment - thanks! My new course ‘How to good at mathematics - and great at fractions! is now live on Udemy: https://www.udemy.com/how-you-can-be-... or click here for a limited 50% discount!: http://www.udemy.com/how-you-can-be-g... The course contains around 3 hours of video, quizzes and a copy of my book 'How to get an A in maths.' All the way through to GCSE and just in time for revision. Subscribe to Simon Deacon maths for more great math videos http://www.youtube.com/subscription_c... Visit playlists to help you get more from your studies 3 minute quick reminder math - get extra exam credit    • 3 minute quick reminder maths - get extra ...   GCSE - everything you need to know to get great grades    • GCSE Higher Level - everything you need to...   How to solve linear equations    • How to solve linear equations   .. and many more. ‘How to get an A in maths’ is now available on Amazon and packed full of hints, tips and techniques to help you get the very best from your studies. Or, first chapter FREE on my website http://www.3minutemaths.co.uk - real maths, tips and techniques. http://www.3minutemaths.co.uk is full GCSE past papers, questions by topic and hints and tips to help you get the very best from your studies.