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For (a*b=a+b+ab) on (\mathbb{R}), which form is helpful for checking associativity?

Answer and explanation

Correct answer: (1+(a*b)=(1+a)(1+b))

Step 1: Add (1) to (a*b=a+b+ab). Step 2: (1+a+b+ab=(1+a)(1+b)), which helps prove associativity quickly. Step 3: Turning an unusual operation into a familiar product form saves time in exams.

Related tags

Binary OperationsAssociativityTransformationRelations And FunctionsMathematicsClass 12 Mcq

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