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
Correct Answer

A. (1)

Step 1

Concept

Putting (x=5) gives (25+5t-30=0), so (t=1). If the root is known, substitute directly.

Step 2

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.

Step 3

Exam Tip

(x=5) रखने पर (25+5t-30=0) इसलिए (t=1)। मूल ज्ञात हो तो सीधे प्रतिस्थापन करें।

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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: A. (1). Explanation: (x=5) रखने पर (25+5t-30=0) इसलिए (t=1)। मूल ज्ञात हो तो सीधे प्रतिस्थापन करें। / Putting (x=5) gives (25+5t-30=0), so (t=1). If the root is known, substitute directly.

Which concept should I revise for this Mathematics MCQ?

Putting (x=5) gives (25+5t-30=0), so (t=1). If the root is known, substitute directly.

What exam hint can help solve this Mathematics question?

(x=5) रखने पर (25+5t-30=0) इसलिए (t=1)। मूल ज्ञात हो तो सीधे प्रतिस्थापन करें।