Evaluate
\left(x_{1}+x_{2}\right)^{12}+102
Expand
x_{1}^{12}+792x_{1}^{5}x_{2}^{7}+495x_{1}^{4}x_{2}^{8}+220x_{1}^{3}x_{2}^{9}+66x_{1}^{2}x_{2}^{10}+12x_{1}x_{2}^{11}+x_{2}^{12}+792x_{2}^{5}x_{1}^{7}+495x_{2}^{4}x_{1}^{8}+220x_{2}^{3}x_{1}^{9}+66x_{2}^{2}x_{1}^{10}+12x_{2}x_{1}^{11}+924\left(x_{1}x_{2}\right)^{6}+102
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