A binary operation * is defined by a*b = ab+a+b for any real number a...
MATHEMATICS
JAMB 1999
A binary operation * is defined by a*b = ab+a+b for any real number a and b. if the identity element is zero, find the inverse of 2 under this operation.
- A. 2/3
- B. 1/2
- C. -1/2
- D. -2/3
Correct Answer: D. -2/3
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