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MTH 421 Exam 1 Question and answers already passed 2026
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June 2026
2025/2026
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MTH 421 Exam 1 Question and answers already passed 2026
multiplication notation - correct answer a^n = a * a * a ...
a^(-n) = a(-1) * a(-1) * a(-1) ....
a^0 = identity element
addition notation - correct answer na = a + a + a ...
(-n)a = (-a) + (-a) + (-a) ...
(0)a = identity element
Abelian group - correct answer n(a+b) = na + nb
(ab) ^ n = a^n b^n
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