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Example 20 - Chapter 1 Class 9 Number Systems
Last updated at Dec. 8, 2016 by Teachoo
Transcript
Example 20 Rationalise the denominator of 17 + 3 2 17 + 3 2 = 17 + 3 2 × 7 − 3 27 − 3 2 = 7 − 3 2 7 + 3 2 7 − 3 2 = 7 − 3 2 (7)2 − 3 2 2 = 7 − 3 249 − 3 ×3 × 2 × 2 = 7 − 3 249 − (9 × 2) = 7 − 3 249 − 18 = 𝟕 − 𝟑 𝟐𝟑𝟏
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.