Let A be Q \{1}. Define * on A by x*y=x+y-xy. Is * binary on A? If so, examine the existance of identity, existence of inverse properties for the operation * on A.

Let A be Q \{1}. Define * on A by xy=x+y-xy. Is binary on A? If so, examine the existance of identity, existence of inverse properties for the operation * on A.

Matching exercise

Match the items on the right to the items on the left.

Step 1

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Step 4

Step 5

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