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4\left(4x^{2}-4x+1\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2x-1\right)^{2}.
16x^{2}-16x+4
Use the distributive property to multiply 4 by 4x^{2}-4x+1.
4\left(4x^{2}-4x+1\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2x-1\right)^{2}.
16x^{2}-16x+4
Use the distributive property to multiply 4 by 4x^{2}-4x+1.