\(x^2+2x-15=0\) में कौनसी संख्या जोड़ी गुणनखंड बनाने में मदद करेगी?
Which number pair helps in factoring \(x^2+2x-15=0\)?
Explanation opens after your attempt
Correct Answer
A. (5) और (-3)(5) and (-3)
Concept
(5+(-3)=2) and \(5\times(-3)=-15\), so this pair is correct. In exams, split the middle term using such a pair.
Why this answer is correct
The correct answer is A. (5) और (-3) / (5) and (-3). (5+(-3)=2) and \(5\times(-3)=-15\), so this pair is correct. In exams, split the middle term using such a pair.
Exam Tip
(5+(-3)=2) और \(5\times(-3)=-15\), इसलिए यह जोड़ी सही है। परीक्षा में मध्य पद को इसी जोड़ी से तोड़ें।
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