#### Answer

$$64s^6-576s^5+2160s^4-4320s^3+4860s^2-2916s+729$$

#### Work Step by Step

We know from the Binomial Theorem (page 693) that we can expand the given expression without multiplying it out. Doing this, we obtain:
$$64s^6-576s^5+2160s^4-4320s^3+4860s^2-2916s+729$$