Top answers

simplify (x-1)^2 - (x-1)

This question involves factorising then simplifying an equation. Start with the original equation:(x-1) 2 - (x-1) Take out a factor of (x-1)(x-1)(x-1-1)Simplify(x-1)(x-2)
NL
Answered by Nathan L. • Maths tutor
4983 Views

How do I solve the Hannahs sweets question from the 2015 GCSE paper?

Here is a question from the 2015 edexcel GCSE paper that was considered particulary challenging. There are n sweets in a bag. 6 of the sweets are orange. The rest of the sweets are yellow. Hannah takes a ran...
MR
Answered by Miranda R. • Maths tutor
13775 Views

What is the best way to prove trig identities?

In my experience the sure fire way to prove trig identities is by doing the following: 1) Assess the question e.g. is it obvious you're going to need a double angle or addition formula, can you see where cos...
EA
5205 Views

Some videos I've made

Prerequisite for addition formula: https://www.youtube.com/watch?v=iHZmi2MHqWc Proof of formula for sin(A+B): https://www.youtube.com/watch?v=BEETggUVMrY Proof of formula for cos(A+B): https://www.youtube.co...
EA
5989 Views

How does integration work?

There are a few different types of integration, the most common being Riemann integration . Riemann integration allows you to find the area under the graph of a function between two points. Its definition us...
EA
9489 Views