Question: Can you please answer both, thank you so much What is the coefficient of y^11 in: (7x + 8y)^19 What is the expansion of (x/2

Can you please answer both, thank you so much What is

Can you please answer both, thank you so much

What is the coefficient of y^11 in: (7x + 8y)^19 What is the expansion of (x/2 + y/3 + z)^15

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