यदि वर्ग मॉडल में भुजा (2x+1) है तो क्षेत्रफल का विस्तार क्या होगा?
If the side of a square model is (2x+1), what is the expansion of its area?
Explanation opens after your attempt
A. \(4x^2+4x+1\)
Concept
In ((2x+1)2), \(2\cdot 2x\cdot 1=4x\) appears. Exam tip: write the square of the first term as \(4x^2\).
Why this answer is correct
The correct answer is A. \(4x^2+4x+1\). In ((2x+1)2), \(2\cdot 2x\cdot 1=4x\) appears. Exam tip: write the square of the first term as \(4x^2\).
Exam Tip
((2x+1)2) में \(2\cdot 2x\cdot 1=4x\) आता है। परीक्षा में पहले पद का वर्ग \(4x^2\) लिखें।
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