Mathematics, 14.09.2019 06:10 shaylarreyes
Show that 0 and 1 are the only squares in z4 (a square is an element that is of the form a 2 for some a in z4). this proves that the square a 2 of an integer a is congruent to 0 or 1 modulo 4.
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Show that 0 and 1 are the only squares in z4 (a square is an element that is of the form a 2 for som...
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