I'm supposed to use the Binomial Theorem to simplify the two following problems

(X-2)^4 (Answer: X^4-8x^3+24X^2-32X+16

and...

(2+3s)^6 (Answer: 64+576S+2160S^2+4320S^3+4860S^4+2916S^5+729S^6)

But I'm completely stumped, I have absolutely no idea how to use the binomial theorem and am in need of some step by step help. I'd appreciate it tremendously.