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Chapter 1 Class 9 Number Systems
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Example 1 (i) Example 1 (ii) Example 1 (iii) Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 (i) Example 15 (ii) Example 15 (iii) Example 15 (iv) Example 16 Example 17 Example 18 Example 19 Example 20 (i) Example 20 (ii) Example 20 (iii) Example 20 (iv) Question 1 Next category Visualise Decimal Numbers on the number line →

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Question 1

Visualise Decimal Numbers on the number line →

Chapter 1 Class 9 Number Systems

Serial order wise

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Visualise Decimal Numbers on the number line

Example 15 (iv) - Chapter 1 Class 9 Number Systems

Last updated at August 14, 2026 by Teachoo

Example 15 (iv) - Simplify (√11 - √7) (√11 + √7) - Teachoo Class 9 - Examples

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Example 16 Simplify the following expressions: (iv) ( 11 7) ( 11 + 7) ( 11 7) ( 11 + 7) We know that, (a + b) (a-b) = a2 b2 Putting a = 11, b = 7 = ( 11)2 ( 7)2 = 11 7 = 4

Chapter 1 Class 9 Number Systems
Serial order wise

Examples

Example 1 (i)

Example 1 (ii)

Example 1 (iii) Important

Example 2

Example 3

Example 4 Important

Example 5

Example 6

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Example 8

Example 9 Important

Example 10 Important

Example 11 Important

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Example 13

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Example 15 (i) Important

Example 15 (ii)

Example 15 (iii)

Example 15 (iv)

You are here

Example 16

Example 17

Example 18

Example 19 Important

Example 20 (i)

Example 20 (ii)

Example 20 (iii) Important

Example 20 (iv) Important

Question 1

Visualise Decimal Numbers on the number line →

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Example 15 (iv) - Chapter 1 Class 9 Number Systems

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