Hi,

I have a couple of homework questions, can anyone help me please?

1) Given that the expansion of (1+ax)^n begins 1+36x+576x^2, find the values of a and n.

2) Determine the coefficient of p^4q^7 in the expansion of (2p-q)(p+q)^10.

3. How to expand the entire trinomial: (10+9x^{3}+8/(3x^{5}) )^{3}

Thank you very much