\(x^2-14x+c\) पूर्ण वर्ग हो तो (c) क्या होगा?

If \(x^2-14x+c\) is a perfect square, what is (c)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

C. (49)square of half coefficient

Step 1

Concept

\(-14x=-2\cdot x\cdot7\), so \(c=7^2=49\). In exams take half of the middle coefficient and square it.

Step 2

Why this answer is correct

The correct answer is C. (49) / square of half coefficient. \(-14x=-2\cdot x\cdot7\), so \(c=7^2=49\). In exams take half of the middle coefficient and square it.

Step 3

Exam Tip

\(-14x=-2\cdot x\cdot7\), इसलिए \(c=7^2=49\) है। परीक्षा में मध्य गुणांक का आधा लेकर उसका वर्ग करें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

\(x^2-14x+c\) पूर्ण वर्ग हो तो (c) क्या होगा? / If \(x^2-14x+c\) is a perfect square, what is (c)?

Correct Answer: C. (49) / square of half coefficient. Explanation: \(-14x=-2\cdot x\cdot7\), इसलिए \(c=7^2=49\) है। परीक्षा में मध्य गुणांक का आधा लेकर उसका वर्ग करें। / \(-14x=-2\cdot x\cdot7\), so \(c=7^2=49\). In exams take half of the middle coefficient and square it.

Which concept should I revise for this Mathematics MCQ?

\(-14x=-2\cdot x\cdot7\), so \(c=7^2=49\). In exams take half of the middle coefficient and square it.

What exam hint can help solve this Mathematics question?

\(-14x=-2\cdot x\cdot7\), इसलिए \(c=7^2=49\) है। परीक्षा में मध्य गुणांक का आधा लेकर उसका वर्ग करें।