Medium Mathematics Quadratic Equations Class 10 Level 29

यदि \(3x^2+nx+12=0\) में मूलों का योग (-4) है, तो (n) क्या है?

If the sum of roots of \(3x^2+nx+12=0\) is (-4), what is (n)?

Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

The sum of roots is \(-\frac{n}{3}=-4\), so (n=12). Do not forget the negative sign in the sum formula.

Step 2

Why this answer is correct

The correct answer is A. (12). The sum of roots is \(-\frac{n}{3}=-4\), so (n=12). Do not forget the negative sign in the sum formula.

Step 3

Exam Tip

मूलों का योग \(-\frac{n}{3}=-4\), इसलिए (n=12) है। योग के सूत्र में ऋण चिन्ह न भूलें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(3x^2+nx+12=0\) में मूलों का योग (-4) है, तो (n) क्या है? / If the sum of roots of \(3x^2+nx+12=0\) is (-4), what is (n)?

Correct Answer: A. (12). Explanation: मूलों का योग \(-\frac{n}{3}=-4\), इसलिए (n=12) है। योग के सूत्र में ऋण चिन्ह न भूलें। / The sum of roots is \(-\frac{n}{3}=-4\), so (n=12). Do not forget the negative sign in the sum formula.

Which concept should I revise for this Mathematics MCQ?

The sum of roots is \(-\frac{n}{3}=-4\), so (n=12). Do not forget the negative sign in the sum formula.

What exam hint can help solve this Mathematics question?

मूलों का योग \(-\frac{n}{3}=-4\), इसलिए (n=12) है। योग के सूत्र में ऋण चिन्ह न भूलें।

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