If \( \left(1+2 x+3 x^{2}\right)^{10}=\sum_{r=0}^{20} b_{r} x^{r} \), then \( b_{4}-8080 \) is W

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If \( \left(1+2 x+3 x^{2}\right)^{10}=\sum_{r=0}^{20} b_{r} x^{r} \), then \( b_{4}-8080 \) is
W
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