Verified Answer :

i think its 6 as the product of 6 and 112 is 672

apologiabiology

perfect square

factor and find pairs to make perfect square
example
36=2233=(22)(33)
we need paris

factor 112
112=22227=(22)(22)(7)
we need a pair for 7
so we just need to multiply it by 7
1127=784
784=222277=(22)(22)(7*7)=28^2


answer is 7

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