Child's play
Number Theory
Level
3
is a multiple of which of the following numbers?
1845
1584
1854
1485
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1 solution
The question is just based on the simple application of an algebraic identity x^{2}-y^{2}=(x+y)(x-y). The 1485 is the product of the x+y and x-y terms obtained in the factorization of the given expression.