Question

Factorise the following polynomials
1. 3 x - 12

Answer 1

Answer:

3x-12

= {√(3x)}^2 - {√(12)}^2

= (√(3x) + √12 ) ( √(3x) - √12 )

Answer 2

Answer:

3 x - 12 = 0

3x = 12

x = 12/3

x = 4