Question

Expand the following,
(2a-1/4)(2a+1/4)​

Answer 1

Answer:

Step-by-step explanation:

(1/2a - 1/4b + 2)²

= (1/2 a)² + (-1/4 b)² + (2)² + 2(1/2a)(-1/4b) + 2(-1/4)(2) + 2(2)(1/2a)

= 1/4a² + 1/16b² + 4 - 1/4ab - 1 + 2a

= 1/4 a² + 1/16 b² + 2a - 1/4 ab + 3.

Answer 2

Step-by-step explanation:

let 2a= a and 1/4 =b

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

(2a)^2-. (1/4)^2

4a^2-(1/16)