0
Anonymous
4 is 5 less than 9
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It is 5.
9
s=35 or less
x can be any number greater than 16 and less than 81.
all factors of 4 and all factors of 9 ex: 4, 9, 36, 72...etc
The perfect squares that are less than 20 are 0, 1, 4, 9, and 16.