Click here to see more videos: https://alugha.com/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 its 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). 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. Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org 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/by-nc/4.0/ ). 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
Plants have developed responses called tropisms. A tropism is a growth in response to a stimulus; so light and water in the plant’s case. There are different types of tropisms: Positive tropisms are when growth is towards the stimulus - so the plant growing towards the light to maximise the stimul
Click here to see more videos: https://alugha.com/FuseSchool CREDITS Animation & Design: Waldi Apollis Narration: Dale Bennett Script: Lucy Billings Look at these baby animals. You will have immediately observed how cute and fluffy they are but you will also have noticed that they are different -
Click here to see more videos: https://alugha.com/FuseSchool Enzymes are really important proteins, that speed up the rates of reactions such as in photosynthesis, respiration and protein synthesis. The enzymes and substrates are always moving, and occasionally they collide at the right speed and
