Hard Mathematics Quadratic Equations Class 10 Level 30

किस समीकरण में (x=0) एक मूल है और दूसरा मूल ऋणात्मक है?

In which equation is (x=0) one root and the other root negative?

Explanation opens after your attempt
Correct Answer

A. \(x^2+7x=0\)

Step 1

Concept

(x-2+7x=x(x+7)), so the roots are (0) and (-7). The other root is negative.

Step 2

Why this answer is correct

The correct answer is A. \(x^2+7x=0\). (x-2+7x=x(x+7)), so the roots are (0) and (-7). The other root is negative.

Step 3

Exam Tip

(x-2+7x=x(x+7)), इसलिए मूल (0) और (-7) हैं। दूसरा मूल ऋणात्मक है।

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Mathematics Answer, Explanation and Revision Hints

किस समीकरण में (x=0) एक मूल है और दूसरा मूल ऋणात्मक है? / In which equation is (x=0) one root and the other root negative?

Correct Answer: A. \(x^2+7x=0\). Explanation: (x-2+7x=x(x+7)), इसलिए मूल (0) और (-7) हैं। दूसरा मूल ऋणात्मक है। / (x-2+7x=x(x+7)), so the roots are (0) and (-7). The other root is negative.

Which concept should I revise for this Mathematics MCQ?

(x-2+7x=x(x+7)), so the roots are (0) and (-7). The other root is negative.

What exam hint can help solve this Mathematics question?

(x-2+7x=x(x+7)), इसलिए मूल (0) और (-7) हैं। दूसरा मूल ऋणात्मक है।

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