Question

I need help with thisThis practice problem is from my trigonometry prep guide It asks to solve (a) and (b)

Answer 1

Given,

The expression of binomial is,

$(3x^5-\frac{1}{9}y^3)^4$

The binomial expansion with exponent 4 is,

$(a-b)^4=a^4-4a^3b+6a^2b^2-4ab^3+b^4$

The summation form of the binomial is,