Evaluate
2\left(8\left(x-y\right)^{2}+x-y\right)
Expand
16x^{2}-32xy+2x+16y^{2}-2y
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16x^{2}-32xy+16y^{2}+2x-2y
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(4x-4y\right)^{2}.
16x^{2}-32xy+16y^{2}+2x-2y
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(4x-4y\right)^{2}.
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