Evaluate
\left(2x-y\right)^{17}
Expand
131072x^{17}-6223360x^{8}y^{9}+2489344x^{7}y^{10}-792064x^{6}y^{11}+198016x^{5}y^{12}-38080x^{4}y^{13}+5440x^{3}y^{14}-544x^{2}y^{15}+34xy^{16}-y^{17}+12446720y^{8}x^{9}-19914752y^{7}x^{10}+25346048y^{6}x^{11}-25346048y^{5}x^{12}+19496960y^{4}x^{13}-11141120y^{3}x^{14}+4456448y^{2}x^{15}-1114112yx^{16}
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