\(x^2+3x-40=0\) में मध्य पद बनाने के लिए कौनसी संख्या जोड़ी सही है?
Which number pair is correct for making the middle term in \(x^2+3x-40=0\)?
Explanation opens after your attempt
Correct Answer
A. (8) और (-5)(8) and (-5)
Concept
(8+(-5)=3) and \(8\times(-5)=-40\), so this pair is correct. In exams, match the sum with (b) and product with (c).
Why this answer is correct
The correct answer is A. (8) और (-5) / (8) and (-5). (8+(-5)=3) and \(8\times(-5)=-40\), so this pair is correct. In exams, match the sum with (b) and product with (c).
Exam Tip
(8+(-5)=3) और \(8\times(-5)=-40\), इसलिए यह जोड़ी सही है। परीक्षा में योग (b) और गुणनफल (c) से मिलाएं।
Login to save your score, XP, coins and progress.