show that the only prime of the form n^3-1 is 7
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Answer:
hii
your is here....
Step-by-step explanation:
L.H.S,
n^3-1
put 2 in place of n.
=2^3 - 1
=8 - 1
= 7
L.H.S. = R.H.S.
Proved
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