1. 6. Factorise Expressions
Begin to factorise an expression by taking out the common number factors b
Factorise an expression by taking out the common number factors a
Factorise an expression by taking out the common algebraic factors c
Find the values of constants in an identity by factorising 7c
Substitute positive and negative numbers into expressions involving small powers and brackets c
Reference Material
Text book: section 7.5 page 118
MEP: 8.8 section 3

2. Factorise an expression by taking out the common number factors 6a
6a + 12 = 6(a + 2)
5b – 15 = 5(b – 3)
4a + 2b = 2(2a + b)
3x – 2y = 3x – 2y no common factors here 
4c – 10t = 2(2c – 5t)
12f + 15 = 3(4f + 5)
9y – 21n = 3(3y – 7n)
5y – 5 = 5(y – 1)
15 – 5p = 5(3 – p)

3. 3x + x² = x(3 + x) 4y² - 2y = 2y(2y – 1) 6f² - 3f = 3f(2f – 1)
Factorise an expression by taking out the common algebraic factors 7c
3x + x² = x(3 + x)
4y² - 2y = 2y(2y – 1)
6f² - 3f = 3f(2f – 1)
2f²g + 4fg² = 2fg(f + 2g)
22 May 2019