PLEASE HELP ME!! FIND THE VOLUME OF X

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq

How do you do the foil method with polynomials?