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Example 12 - Chapter 1 Class 9 Number Systems
Last updated at April 16, 2024 by Teachoo
Chapter 1 Class 9 Number Systems
Concept wise
- Rational numbers - Definition
- Finding rational number between two numbers
- Irrational Numbers
-
Simplifying real numbers
- Rationalising
- Laws of exponents
- Finding decimal expansion
- Expressing decimal in p/q
- Classifiying rational/irrational
- Finding irrational numbers b/w two numbers
- Real numbers on a number line
Transcript
Example 13 Add 2 √2 + 5 √3 and √2 - 3 √3 . Here, both numbers have root in it So, we combine the numbers with the same root Combining 2 √2 & √2 and 5√3 & 3 √3, and then solving 2 √2 + 5 √3 + √2 – 3 √3 = (2 √2 + √2) + (5√3 – 3 √3) = √2 (2 + 1) + √3(5 – 3) = 3 √2 + 2 √3
