Expansion of (2a-1/2a)^2 || a minus b whole square || (a-b)²=a²-2ab+b² ||Algebraic Identity

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a minus b whole square
(a-b)²=a²-2ab+b²
In this video we shall learn how to expand (2a-1/2a)² by using algeraic identity (a-b)²=a²-2ab+b²