Binomial Distribution Part 2?

Question

So I've figured out this whole binomial distribution thing. Is there any shortcut or anything when I need to calculate something like "at least 5" so I don't have to do this plus this plus this etc?

Answer 1

For binomial distribution, you distribute the term outside the parenthesis on each of the terms inside, then you combine like terms. After that you're done. But usually you want to arrange it desendingly by powers. Good luck!