Why not try another solving quadratic equations quiz? The questions in this quiz are suitable for GCSE maths students studying quadratic equations, solving quadratic equations using the quadratic ...

“I’m not going to do my maths homework. Look at these unsolved problems. Here’s a number in mortal combat with another. One of them is going to get subtracted. But why? What will be left of him?” – ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

She’s right—using simultaneous equations does get really complicated, and if you’d like to send me your work for the solution, I’d love to see it. But the system is also kind of a trick. Like a sudoku ...