\(x^2+2x-63\) के गुणनखंड कौन से हैं?
What are the factors of \(x^2+2x-63\)?
Explanation opens after your attempt
A. ((x+9)(x-7))
Concept
Since (9-7=2) and (9\cdot(-7)=-63). Exam tip: use opposite signs for a negative constant term.
Why this answer is correct
The correct answer is A. ((x+9)(x-7)). Since (9-7=2) and (9\cdot(-7)=-63). Exam tip: use opposite signs for a negative constant term.
Exam Tip
(9-7=2) और (9\cdot(-7)=-63) है। परीक्षा में ऋण स्थिर पद के लिए विपरीत चिह्न लें।
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