Mathematics Answer, Explanation and Revision Hints
\( x^2-49 \) को गुणनखंड रूप में लिखिए। / Write \( x^2-49 \) in factor form.
Correct Answer: B. ( (x+7)(x-7) ). Explanation: \(49=7^2\), इसलिए \(x^2-49=x^2-7^2\) है। परीक्षा में वर्ग पहचानना जरूरी है। / Since \(49=7^2\), \(x^2-49=x^2-7^2\). Exam tip: identify squares first.
Which concept should I revise for this Mathematics MCQ?
Since \(49=7^2\), \(x^2-49=x^2-7^2\). Exam tip: identify squares first.
What exam hint can help solve this Mathematics question?
\(49=7^2\), इसलिए \(x^2-49=x^2-7^2\) है। परीक्षा में वर्ग पहचानना जरूरी है।
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