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Example 4 Find the square root of 6400. We use prime factorization to find square root We use prime factorization to find square root Thus, 6400 = 2 Γ— 2 Γ— 2 Γ— 2 Γ— 2 Γ— 2 Γ— 2 Γ— 2 Γ— 5 Γ— 5 6400 = 22 Γ— 22 Γ— 22 Γ— 22 Γ— 52 Therefore, Square root of 6400 = 2 Γ— 2 Γ— 2 Γ— 2 Γ— 5 = 4 Γ— 4 Γ— 5 = 4 Γ— 20 = 80

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.