भुजा (y-3) वाले वर्ग के क्षेत्र मॉडल में सही विस्तार कौन सा है?
Which expansion is correct in the area model of a square with side (y-3)?
Explanation opens after your attempt
C. \(y^2-6y+9\)
Concept
Two (3y) strips are subtracted, and (9) is added back. Exam tip: keep the middle term negative in ((a-b)2).
Why this answer is correct
The correct answer is C. \(y^2-6y+9\). Two (3y) strips are subtracted, and (9) is added back. Exam tip: keep the middle term negative in ((a-b)2).
Exam Tip
दो (3y) पट्टियां घटती हैं और (9) वापस जुड़ता है। परीक्षा में ((a-b)2) में बीच का पद ऋणात्मक रखें।
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