Find the least number that must be subtractedfrom 5607 so as to get a perfect square. Also find the square root of the perfect square of 1989
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First make the pairs from right 07 and 56
7 ) 56 07(7
+7)49
________
144) 707(4
) 576(
_________
131
__________
131 is the answer
7 ) 56 07(7
+7)49
________
144) 707(4
) 576(
_________
131
__________
131 is the answer
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