\(x^2+9x+20\) का सही गुणनखंड रूप कौन सा है?
Which is the correct factorised form of \(x^2+9x+20\)?
Explanation opens after your attempt
B. ((x+4)(x+5))
Concept
(4+5=9) and \(4\times5=20\). Exam tip: check both sum and product.
Why this answer is correct
The correct answer is B. ((x+4)(x+5)). (4+5=9) and \(4\times5=20\). Exam tip: check both sum and product.
Exam Tip
(4+5=9) और \(4\times5=20\) है। परीक्षा में योग और गुणनफल दोनों जांचें।
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