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On real numbers, what is the identity element for (a*b=a+b+2)?वास्तविक संख्याओं पर (a*b=a+b+2) का तत्समक अवयव कौन सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (-2)(-2)
Step 1: Put (a*e=a). Step 2: From (a+e+2=a), we get (e=-2). Step 3: In such rules, the negative of the added constant often becomes the identity.चरण 1: (a*e=a) रखें। चरण 2: (a+e+2=a) से (e=-2) मिलता है। चरण 3: ऐसे नियमों में अतिरिक्त स्थिर संख्या का ऋणात्मक अक्सर तत्समक बनता है।
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