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Q.

The square root of 80 405 is ____.


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Detailed Solution

The square root of 80 405 is 4 9 .
The given number is 80 405 .
Solving by prime factorization.
80 405 = 2×2 ¯ × 2×2 ¯ ×5 3×3 ¯ × 3×3 ¯ ×5 = 2×2× 5 3×3× 5 = 4 9
Thus, 80 405 = 4 9 .
 
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