Write the coefficient of $${x}^{2}$$ in the following: $$y+{y}^{2}x+{y}^{3}{x}^{2}+{y}^{4}{x}^{3}$$
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Coefficient of $${x}^{2}$$ in $$y+{y}^{2}x+{y}^{3}{x}^{2}+{y}^{4}{x}^{3}$$ is $${y}^{3}$$
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Write the coefficient of $${x}^{2}$$ in the following: $$y+{y}^{2}x+{y}^{3}{x}^{2}+{y}^{4}{x}^{3}$$
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