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Algebra

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Quantitative Aptitude – Algebra

Build foundational and advanced algebraic skills including operations, identities, equations, and factorization.

1. Basic Concepts

  • Constants, variables, expressions
  • Operations: addition, subtraction, multiplication, division

2. Standard Identities

  • (a + b)² = a² + 2ab + b²
  • (a − b)² = a² − 2ab + b²
  • a² − b² = (a − b)(a + b)
  • (x + a)(x + b) = x² + (a + b)x + ab

3. Factorization Techniques

  • Common factor
  • Grouping
  • Using identities
  • Quadratic equations: ax² + bx + c = 0 → factor or use formula

4. Equations

  • Linear: ax + b = 0 → x = −b/a
  • Quadratic: x = [−b ± √(b²−4ac)] / 2a

5. Word Problems

  • Translate statements into algebraic equations
  • Solve using simplification or substitution

6. Strategy

  • Memorize identities and practice factorization
  • Always simplify equations before solving

Summary: Algebra is a symbolic math system requiring identity mastery and logical manipulation. Focus on structure and simplification.