How does Robin lead Lysander and Demetrius "up and down" (3.2.418)?

(3x2 + 8) (x – 5)

step-by-step explanation:

verify this answer by multiplying out the parens:

which is the same as the original form of the polynomial

a omg *hides wit stranger*

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.