Expert Mathematics Polynomials Class 10 Level 25

यदि (p(x)=x-2+2\sqrt{7}x+6), तो विविक्तकर क्या है?

If (p(x)=x-2+2\sqrt{7}x+6), what is the discriminant?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

(D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4). Even with an irrational coefficient, the discriminant can be rational.

Step 2

Why this answer is correct

The correct answer is A. (4). (D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4). Even with an irrational coefficient, the discriminant can be rational.

Step 3

Exam Tip

(D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4)। अपरिमेय गुणांक होने पर भी विविक्तकर परिमेय हो सकता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=x-2+2\sqrt{7}x+6), तो विविक्तकर क्या है? / If (p(x)=x-2+2\sqrt{7}x+6), what is the discriminant?

Correct Answer: A. (4). Explanation: (D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4)। अपरिमेय गुणांक होने पर भी विविक्तकर परिमेय हो सकता है। / (D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4). Even with an irrational coefficient, the discriminant can be rational.

Which concept should I revise for this Mathematics MCQ?

(D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4). Even with an irrational coefficient, the discriminant can be rational.

What exam hint can help solve this Mathematics question?

(D=\(2\sqrt{7}\)2-4\cdot1\cdot6=28-24=4)। अपरिमेय गुणांक होने पर भी विविक्तकर परिमेय हो सकता है।

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