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  1. Chapter 1 Class 9 Number Systems
  2. Concept wise

Transcript

Simplify (√4−√13)(√4+√13) (√4−√13)(√4+√13) = (√4)^2−(√13)^2 = 4 − 13 = −9

About the Author

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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.