टाइल मॉडल \(x^2+9x+20\) को आयत के रूप में बनाता है। कौन-सी भुजाएं सही होंगी?
A tile model forms \(x^2+9x+20\) as a rectangle. Which sides will be correct?
Explanation opens after your attempt
B. (x+4) और (x+5)sum and product work
Concept
Since (4+5=9) and \(4\cdot5=20\), the sides are (x+4) and (x+5). In exams match the sum with the middle term and the product with the constant term.
Why this answer is correct
The correct answer is B. (x+4) और (x+5) / sum and product work. Since (4+5=9) and \(4\cdot5=20\), the sides are (x+4) and (x+5). In exams match the sum with the middle term and the product with the constant term.
Exam Tip
(4+5=9) और \(4\cdot5=20\), इसलिए भुजाएं (x+4) और (x+5) हैं। परीक्षा में योग मध्य पद और गुणनफल स्थिर पद से मिलाएं।
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