Cambridge Maths Academy

Pure mathematics Year 2 Table of contents Partial fractions Examples Edexcel P2 Ch1 Exercise 1D 1. Partial fractions In the previous section, P2 §1.2 Algebraic fractions, we learnt how to add and subtract two (or more) fractions, e.g. $$ \frac{2}{x+3} - \frac{1}{x+1} = \frac{x-1}{(x+3)(x+1)} $$ Now, we can perform the reverse. In other words, a single fraction with two distinct linear factors in..

Pure mathematics Year 1 Table of contents Binomial, trinomial and polynomial Binomial expansion Pascal's triangle Examples Edexcel P1 Ch8 Exercise 8A 1. Binomial, trinomial and polynomial The binomial expansion tells us how to expand $(a+b)^n$. The word 'bi-nomial' means 'two terms' - here, they are $a$ and $b$. Similarly, monomial means 'one term', trinomial means 'three terms' and polynomial m..