\(x^2+9x+20\) का सही गुणनखंडन चुनिए।
Choose the correct factorisation of \(x^2+9x+20\).
Explanation opens after your attempt
A. ((x+4)(x+5))
Concept
(4+5=9) and \(4\cdot5=20\). Exam tip: correct factors must satisfy both conditions.
Why this answer is correct
The correct answer is A. ((x+4)(x+5)). (4+5=9) and \(4\cdot5=20\). Exam tip: correct factors must satisfy both conditions.
Exam Tip
(4+5=9) और \(4\cdot5=20\) है। परीक्षा में सही कारक वही होंगे जिनसे दोनों शर्तें पूरी हों।
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