Question

Factorise the following expression
using the suitable identities. (a)
${a}^{2} - {4b}^{2}$
​

Answer 1

Answer:

(a+2b) - (a-2b)

Step-by-step explanation:

a2 - 4b2

= (a)2 - (2b)2

= (a+b) - (a-b)

= (a+2b) - a-2b)