vicada2782
03.05.2020 •
Mathematics
Are perfect squares closed under subtraction
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Ответ:
no
Step-by-step explanation:
The set of perfect squares includes {0, 1, 4, 9, 16, 25, ...}.
Subtracting a couple of the elements, we get ...
4 - 1 = 3 . . . . not a member of the set
The set is NOT CLOSED under subtraction.
Ответ:
28
Step-by-step explanation:
30+25=55
44+12=56
25+32=57
55+56+57=168
168÷6=28