Answer
$4x^{2}-4x+1$
Work Step by Step
$(2x-1)^{2}$
Apply the formula for squaring a binomial, which is $(a-b)^{2}=a^{2}-2ab+b^{2}$
Here, $a=2x$ and $b=1$
$(2x-1)^{2}=(2x)^{2}-2(2x)(1)+1^{2}=4x^{2}-4x+1$
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