Evaluate
\left(w+1\right)^{15}
Expand
w^{15}+15w^{14}+105w^{13}+455w^{12}+1365w^{11}+3003w^{10}+5005w^{9}+6435w^{8}+6435w^{7}+5005w^{6}+3003w^{5}+1365w^{4}+455w^{3}+105w^{2}+15w+1
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