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