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Dummy variable substitution

SSC CGL level Solution Set 22 Algebra 7 video Part II

This is a 5 problem set rich in learning. The five problems solved in this video are of different types and includes a number of difficult problems. All are solved though in mind using concepts and techniques such as, pattern discovery, method to eliminate surd from a surd variable by forming a sum of inverses, rule of formation of sum of inverse expression, dummy variable substitution, relation of roots of a quadratic equation, and mathematical reasoning. The Concepts and Techniques, explained with precision and details, form the BASIC SKILLSET for solving harder algebra problems EASILY IN MIND...

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SSC CGL level Solution Set 13 Algebra 6 video Part II

This is a 5 problem set rich in learning. The five problems solved in this video are of different types and includes two difficult and a few tricky ones. All are solved though in mind in minimum time using concepts and techniques such as, pattern discovery, prime number concepts, comparison of coefficients of like terms, golden strategy of algebraic simplification, two methods of double square root surd simplification, pattern discovery, inversion technique, dummy variable substitution, and mathematical reasoning. The Concepts and Techniques, explained with precision and details, form the BASIC SKILLSET for solving harder algebra problems EASILY IN MIND...

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SSC CGL level Solution Set 11 Algebra 5 video Part II

The five problems solved in this video are of different types and a few not so easy. All are solved in mind in minimum time using concepts and techniques such as, pattern discovery, inversion technique, dummy variable substitution, zero sum of square expressions and mathematical reasoning. The Concepts and Techniques, explained with precision and details, form the BASIC SKILLSET for solving harder algebra problems EASILY IN MIND...

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SSC CGL level Solution Set 10 Algebra 4 video part 2

The five problems solved in this video are of different types and a few not so easy. All are solved in mind in minimum time using concepts and techniques such as, pattern discovery, sum of cubes conversion, dummy variable substitution, zero sum of square expressions and mathematical reasoning. The Concepts and Techniques, explained with precision and details, form the BASIC SKILLSET for solving harder algebra problems EASILY IN MIND...

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SSC CGL level Solution Set 9 Algebra 3 video part 1

In this first part of video on SSC CGL Solution set 9, Algebra 3, first 5 questions 1 to 5 of corresponding article from SureSolv.com are solved using suitable concepts and techniques all in quick time. All the five problems solved are of different types and could be solved on mind. Use of pattern based methods such as sum of inverses conversions, double square root surd simplification, three variable zero sum principle, dummy variable substitution and other such methods ensured quick mental solutions in only a few steps...

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How to solve difficult SSC CGL level Algebra problems in a few steps 6 video

In this 6th video on difficult SSC CGL Algebra problem solving quickly in a few steps, two chosen problems are solved quickly in mind, first by discovering a pattern and converting target expression to given sum of inverses at one go and second by simplifying a cumbersome expression to a simple known form by dummy variable substitution. This video should be useful for SSC CGL Tier II, CAT or GMAT as well....

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