What least number should be subtracted from 49299 to make it a perfect square
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484=22²
48,400=220²
221²=(220+1)²=48,400+440+1
=48,841<49,299
222²=(220+2)²=48,400+880+4
=49,284<49299
223²=(220+3)²=48,400+1320+9
=49,729>49,299
49,299–49,284=99–84=15
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