Question

Factorise the following expression :​

Answer 1

(i)(a - 2y) (3x - 4b)

(iii) (m - n)(m + 4)

Explanation:

(i)

3ax - 6xy + 8by - 4ab

= 3x (a - 2y) - 4b (-2y + a)

= 3x (a - 2y) - 4b (a - 2y)

= (a - 2y) (3x - 4b)

(iii)

`{m}^(2) - mn + 4m - 4n \\ \\ = m(m - n) + 4(m - n) \\ \\ = (m - n)(m + 4)`