This is a set 5 problems of different types and a few are not easy. This set of solutions is rich in learning. All are solved in mind using concepts and techniques such as, pattern discovery, zero valued factoring, sum of cubes, coefficient interchange in sum of inverses, surd algebra, principle of zero sum of square terms, and mathematical reasoning. The Concepts and Techniques, explained with precision and details, form the BASIC SKILLSET for solving harder algebra problems EASILY IN MIND.
These are the last 5 questions 6 to 10 and form the 2nd part of video on the article SSC CGL Solution set 33, Algebra 9 from SureSolv.com.