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Class 9 Math Ex 4.2 Notes Pdf Logarithms Algebraic Expressions and Algebraic Formulas

These are solved math notes of Class 9/ 9th/ SSC-1/ Matric Part-I/ 9th Grade/ SSC Part-I/ High School/ O-Level/ General Science Group/ Humanities Group. Pdf of solved math chapter 4(Algebraic Expressions and Algebraic Formulas) are provided. The Pdf’s contains notes of exercise 4.2 of chapter 4.

Class 9 Math Ex 4.2 Notes PDF

Complete Ex 4.2 Solution Video – Video by Waqas Nasir

Chapter 4 Exercise 4.2 Solution Notes PDF

This is the Pdf notes of Solved class 9 math exercise 4.2. It is same for Class 9/ 9th/ SSC-1/ Matric Part-I/ 9th Grade/ SSC Part-I/ High School/ O-Level/ General Science Group/ Humanities Group Math book. The Notes are valid and are included in the syllabus and curriculum of FBISE(Federal Board) and Punjab Boards.

Formulas discussed in Ex 4.2

  • (a+ b)2 +(a -b)2 = 2(a2 + b2 ) and (a+ b)2 – (a -b)2 = 4ab.
  • (a + b + c )2 = a 2 + b2 + c 2 + 2ab + 2bc + 2ca.
  • (a+ b)3 = a3 + 3ab(a + b) + b3
    (a – b ) 3 = a3 – 3ab(a – b) – b3
  • a 3 ± b3 = (a ± b) (a2 + ab + b 2 )

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Ex 4.1 Solution Notes

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Ex 4.3 Solution Notes

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