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...]
Proof of tangent – GCSE maths grade 7+
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...]
How to solve quadratic inequalities – grade 7+ maths GCSE
This video is all about how to solve quadratic inequalities and is aimed at around grade 7+ GCSE Maths. Work out the integer values that satisfy 1) 2x² - 10x + 10 < 0 2) x² - 7x + 11 < 0 How to solve quadratic inequalities questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic … [Read more...]
How to solve difficult simultaneous equations – grade 7+ GCSE maths
This video is about how to solve difficult simultaneous equations, and is around grade 7+ .... these questions can be quite challenging. Solve 3y = 5 - 2x y² = xy +5 Top Tips! This type of question is usually solved by substitution - making everything 'x' or 'y' Once you've got an equation it'll need solving Sometimes it involves using … [Read more...]
How to work with venn diagrams – new GCSE maths topic
In this post we're looking at a venn diagram. These types of questions tend to be fairly straightforward ... or much more difficult ... and, unfortunately, there isn't anything in the middle ground. I must admit it took me a little while to understand these, and it's only by constantly reading that I was able to work through the questions. Download the worksheet … [Read more...]