Find the least common denominator for these fraction 4/8 and 1/4​

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?