SOLUTION: What is the least number which must be added to 306455 to obtain a perfect square?

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Question 1042029: What is the least number which must be added to 306455 to obtain a perfect square?
Answer by ikleyn(52786) About Me  (Show Source):
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What is the least number which must be added to 306455 to obtain a perfect square?
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1.  sqrt%28306455%29 = 553.58.

2.  Closest bigger integer number is 554.

3.  554%5E2 = 306916.

4.  306916 - 306455 = 461.

Answer. 461.