यदि (3) समीकरण \(x^2+sx-12=0\) का मूल है तो (s) का मान क्या है?
If (3) is a root of \(x^2+sx-12=0\), what is the value of (s)?
Explanation opens after your attempt
A. (1)
Concept
Putting (x=3) gives (9+3s-12=0), so (s=1). Substitute the given root directly into the equation.
Why this answer is correct
The correct answer is A. (1). Putting (x=3) gives (9+3s-12=0), so (s=1). Substitute the given root directly into the equation.
Exam Tip
(x=3) रखने पर (9+3s-12=0) इसलिए (s=1)। दिए गए मूल को सीधे समीकरण में रखें।
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