Hard Mathematics Quadratic Equations Class 10 Level 29

यदि (x=-2) समीकरण \(3x^2+px+10=0\) का मूल है, तो (p) का मान क्या होगा?

If (x=-2) is a root of \(3x^2+px+10=0\), what is the value of (p)?

Explanation opens after your attempt
Correct Answer

A. (11)

Step 1

Concept

Putting (x=-2) gives (12-2p+10=0). Hence (p=11).

Step 2

Why this answer is correct

The correct answer is A. (11). Putting (x=-2) gives (12-2p+10=0). Hence (p=11).

Step 3

Exam Tip

(x=-2) रखने पर (12-2p+10=0) मिलता है। इससे (p=11) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (x=-2) समीकरण \(3x^2+px+10=0\) का मूल है, तो (p) का मान क्या होगा? / If (x=-2) is a root of \(3x^2+px+10=0\), what is the value of (p)?

Correct Answer: A. (11). Explanation: (x=-2) रखने पर (12-2p+10=0) मिलता है। इससे (p=11) है। / Putting (x=-2) gives (12-2p+10=0). Hence (p=11).

Which concept should I revise for this Mathematics MCQ?

Putting (x=-2) gives (12-2p+10=0). Hence (p=11).

What exam hint can help solve this Mathematics question?

(x=-2) रखने पर (12-2p+10=0) मिलता है। इससे (p=11) है।

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