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Question

Find the square root of the following number by the prime factorisation method.
5625

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Solution

The factors of 5625 is,

5625=5×5×5×5×3×3

Take square root both sides,

5625=5×5×5×5×3×3

=54×32

=((5)2×3)2

=25×3

=75

Therefore, the square root of 5625 is 75.


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