This video is all about working with surds, and we’re asked to - calculate the area - calculate the length AC of a right angle triangle ABC. The height is √5 - 2, the base is √5 + 2. The question is aimed at around grade 7+ GCSE maths, and are usually non-calculator. These types of working with surds questions appear in all the main examination boards, … [Read more...]

 This video is all about how to calculate the value of x in algebraic fractions. Solve: 5/(x+1) - 3/2(x+1) = 1/2 The question is aimed at around grade 7+ GCSE maths. Top Tips! Always work down the page, with the equals sign in the middle Show each stage of your calculation Learn to read right to left ... sometimes it's easier to keep the value of x on … [Read more...]

  This video is all about a proof of tangent question, and is aimed at GCSE maths grade 7+. "Prove that x - 2y =10, is a tangent to the circle x² + y² = 20." Proof of tangent questions are usually non calculator and generally 4 - 5 marks. Top Tips! It’s useful to draw the question first to try to understand what they are asking :-) Proof of tangent … [Read more...]

   This video is all about using the cosine rule, and is aimed at around grade 6 GCSE Maths. It’s quite likely to be a non calculator question. You need to find x after being given three sides of a triangle (x+2), (root73) and (2x-3); as well as one angle of 60 degrees. Top Tips! Always write the formula Work methodically down the page Label angles … [Read more...]

   This video is all about how to rearrange the subject of a formula, and is aimed at around grade 4 GCSE maths. Make t the subject of the formula v = u + 5t How to rearrange the subject of a formula questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. … [Read more...]