एक छात्र ने ((x+5)2) के मॉडल में केवल \(x^2+25\) लिखा। कौन-सा भाग छूट गया?
A student wrote only \(x^2+25\) in the model of ((x+5)2). Which part was missed?
Explanation opens after your attempt
B. (10x)two rectangular strips
Concept
Two (5x) strips were missed, so total (10x) was missed. In exams do not treat ((a+b)2) as \(a^2+b^2\).
Why this answer is correct
The correct answer is B. (10x) / two rectangular strips. Two (5x) strips were missed, so total (10x) was missed. In exams do not treat ((a+b)2) as \(a^2+b^2\).
Exam Tip
दो (5x) पट्टियां छूटी हैं इसलिए कुल (10x) छूटा। परीक्षा में ((a+b)2) को \(a^2+b^2\) न समझें।
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