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  1. Chapter 6 Class 8 Squares and Square Roots
  2. Concept wise

Transcript

Example 5 (Chapter 6 Class 8 Square and Square Roots NCERT Book) Is 90 a perfect square? Doing prime factorization of 90 2 | 90 3 | 45 3 | 15 5 | 5 | 1 Thus, 90 = 2 × 3 × 3 × 5 Since 2 & 5 do not occur in pairs ∴ 90 is not a perfect square.

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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.