Binomial Expansion

Question 1

What is the binomial expansion form when the power is negative or fractional? For (1+x)^n

Answer 1

1 + nx + n(n-1) / 2! +…

Question 2

What is the binomial expansion form when the power is negative or fractional? For (a+bx)^n

Answer 2

Factor out a^n and use the formula for (1+x)^n on (1+bx/a)^n

Then multiply each term by a^n