This question was asked in Ex 2.5,4
Expand each of the following using suitable identities 
  1. (X 2y 4z)^2
  2. (2a-3b)^3
  3. (-2a 5b-3c)^2
  4. (A/4-b/2 1
  5. (P 1)^3
  6. (X-2/3 y)^3
Sravan Kumar's image