यदि वर्ग मॉडल में भुजा (x+3) हो तो उसका विस्तृत क्षेत्रफल क्या होगा?
If the side of a square model is (x+3), what is its expanded area?
Explanation opens after your attempt
B. \(x^2+6x+9\)
Concept
In ((x+3)2), the middle term is \(2\cdot x\cdot 3\). Exam tip: do not forget the two equal rectangles.
Why this answer is correct
The correct answer is B. \(x^2+6x+9\). In ((x+3)2), the middle term is \(2\cdot x\cdot 3\). Exam tip: do not forget the two equal rectangles.
Exam Tip
((x+3)2) में बीच का पद \(2\cdot x\cdot 3\) होता है। परीक्षा में दो समान आयतों को जोड़ना न भूलें।
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