Quadratic Formula: Solving Quadratics | Algebra | Maths | FuseSchool скачать в хорошем качестве

Quadratic Formula: Solving Quadratics | Algebra | Maths | FuseSchool

Quadratics can be solved in different ways: factorising, quadratic formula or by completing the square. In this video we are going to look at how to use the quadratic formula to solve quadratics. Quadratics can’t always be factorised, however the quadratic formula does always work. Factorising IS easier to do, so it’s better to check for that first. But if you can’t factorise, then we can use the quadratic formula instead. If the question says ‘giving your answer to 3 significant figures’ it means these quadratics cannot be factorised, so straight away look to use the quadratic formula. To solve quadratics, they always need to equal 0. So before you start, you may need to do some rearranging into the form ax2 + bx + c = 0. ‘a’ is the number in front of the x-squared, ‘b’ is the number in front of the ‘x’ and ‘c’ is the number on it’s own. Make sure you keep the sign in front of the numbers. We then just substitute these a,b and c values into the quadratic formula. You have to be very careful with negatives: it is best to use brackets. You will nearly always end up with 2 different answers, but occasionally you may get the same answer twice (which can still be correct). SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here:    • Complete & Incomplete Combustion | Environ...   Find all of our Biology videos here:    • The Lymphatic System | Physiology | Biolog...   Find all of our Maths videos here:    • Видео   Twitter:   / fuseschool   Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us:    / fuseschool   Friend us:   / fuseschool   This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/b... ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org