Expand Everything?

Algebra Level 3

x(x(x(x(x(x(x(x+2)+3)+4)+5)+6)+7)+8)+9x(x(x(x(x(x(x(x+2) +3 )+ 4)+5) + 6) + 7) + 8)+9

What is the coefficient of x4x^4 in the expansion above?

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