यदि (p(x)=(r-1)x-2+(r+2)x+5) स्थिर बहुपद हो, तो (r) के बारे में सही निष्कर्ष क्या है?

If (p(x)=(r-1)x-2+(r+2)x+5) is a constant polynomial, what is the correct conclusion about (r)?

Explanation opens after your attempt
Correct Answer

B. ऐसा कोई (r) नहीं हैNo such (r) exists

Step 1

Concept

For a constant polynomial, both (r-1=0) and (r+2=0) are required. These cannot hold together.

Step 2

Why this answer is correct

The correct answer is B. ऐसा कोई (r) नहीं है / No such (r) exists. For a constant polynomial, both (r-1=0) and (r+2=0) are required. These cannot hold together.

Step 3

Exam Tip

स्थिर बहुपद के लिए (r-1=0) और (r+2=0) दोनों चाहिए। ये दोनों एक साथ संभव नहीं हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=(r-1)x-2+(r+2)x+5) स्थिर बहुपद हो, तो (r) के बारे में सही निष्कर्ष क्या है? / If (p(x)=(r-1)x-2+(r+2)x+5) is a constant polynomial, what is the correct conclusion about (r)?

Correct Answer: B. ऐसा कोई (r) नहीं है / No such (r) exists. Explanation: स्थिर बहुपद के लिए (r-1=0) और (r+2=0) दोनों चाहिए। ये दोनों एक साथ संभव नहीं हैं। / For a constant polynomial, both (r-1=0) and (r+2=0) are required. These cannot hold together.

Which concept should I revise for this Mathematics MCQ?

For a constant polynomial, both (r-1=0) and (r+2=0) are required. These cannot hold together.

What exam hint can help solve this Mathematics question?

स्थिर बहुपद के लिए (r-1=0) और (r+2=0) दोनों चाहिए। ये दोनों एक साथ संभव नहीं हैं।