
Chapter 1 Class 9 Number Systems
Ex 1.1, 4 (i) Important
Ex 1.2, 1 (i)
Ex 1.2, 3 Important
Example 7 Important
Example 9 Important
Example 10 Important
Ex 1.3, 3 (i)
Ex 1.3, 8 Important
Ex 1.3, 9 (i)
Example 16 (i) Important You are here
Example 19
Ex 1.5, 1 (i)
Ex 1.5, 2 (i) Important
Ex 1.5, 4
Ex 1.5, 5 (i)
Example 21 (i)
Ex 1.6, 1 (i)
Ex 1.6, 2 (i) Important
Ex 1.6, 3 (i) Important
Chapter 1 Class 9 Number Systems
Last updated at Aug. 25, 2021 by Teachoo
Example 16 Simplify the following expressions: (5 + 7) (2 + 5) (5 + 7) (2 + 5) = 5 (2 + 5) + 7 (2 + 5) = 5 2 + 5 5 + 7 2+ 5 7 = 10 + 5 5 + 2 7+ (5" " 7) = 10 + 5 5 + 2 7 + 35