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2014-07-22T17:52:19+03:00
(4n+1)²=(3²)².5²=(45)²
4n+1=45
4n=44
n=11
b)
n²=(4.125)²
n=500
c)
n³=(7.25)³
n=175
d)
(n-1)³=(2.9)³
n-1=18
n=19
1 5 1