A binary operation otimes defined on the set of... - JAMB Physics 2009 Question
A binary operation (\otimes) defined on the set of integers is such that m (\otimes) n = m + n + mn for all integers m and n. Find the inverse of -5 under this operation, if the identity element is 0
A
\(\frac{-5}{4}\)
B
\(\frac{-5}{6}\)
C
o
D
5
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Correct Option: D
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