Igot the book basic technical mathematics with calculus 11 ed and i can't fid answers

Factor this polynomial completely x^2-64

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Construct the graph that models the given situation