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Find the LEAST number that must be SUBTRACTED from 1989 to make it a perfect square. Use long division to find the largest perfect square not exceeding 1989.

Class 8Square Root by Long DivisionSquares and Roots
  • A28
  • B53
  • C65
  • D76

Step-by-Step Solution

By long division, , and > 1989. So the largest perfect square <= 1989 is 1936. Subtract 1989 - 1936 = 53.
Answer: B) 53

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