\( (2 x-1)(2 x-1) \)
\( 4x^2 - 4x + 1 \)
Step 1 :\( (2x - 1)(2x - 1) \)
Step 2 :\( (2x - 1)^2 \)
Step 3 :\( 4x^2 - 4x + 1 \)