Maths with David

23 June

👉🏼 Given that $f(x) = \frac{1}{2x+1}$ , find f(3)

👈🏼 Find a value of x for which f(x) is not defined (i.e. f(x) does not exist)

🖐🏼 Can you prove that the triangle below is a right-angled triangle?

👆🏼 Fully simplify $\frac{1}{3x^2 - x - 14} \div \frac{1}{2x^2 - x - 10}$

👇🏼 In the diagram below, the area of ABC is 22.981cm². Calculate the length of AB