यदि (5) समीकरण \(x^2+tx-30=0\) का मूल है तो (t) का मान क्या है?
If (5) is a root of \(x^2+tx-30=0\), what is the value of (t)?
Explanation opens after your attempt
A. (1)
Concept
Putting (x=5) gives (25+5t-30=0), so (t=1). If the root is known, substitute directly.
Why this answer is correct
The correct answer is A. (1). Putting (x=5) gives (25+5t-30=0), so (t=1). If the root is known, substitute directly.
Exam Tip
(x=5) रखने पर (25+5t-30=0) इसलिए (t=1)। मूल ज्ञात हो तो सीधे प्रतिस्थापन करें।
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