In the following exercises, factor completely using the perfect square trinomials pattern. In the following exercises, factor completely using the difference of squares pattern, if possible. In the fo...In the following exercises, factor completely using the perfect square trinomials pattern. In the following exercises, factor completely using the difference of squares pattern, if possible. In the following exercises, factor completely using the sums and differences of cubes pattern, if possible. ⓐ After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section.