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)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. \(y^2-6y+9\)

Step 1

Concept

Two (3y) strips are subtracted, and (9) is added back. Exam tip: keep the middle term negative in ((a-b)2).

Step 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).

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: C. \(y^2-6y+9\). Explanation: दो (3y) पट्टियां घटती हैं और (9) वापस जुड़ता है। परीक्षा में ((a-b)2) में बीच का पद ऋणात्मक रखें। / Two (3y) strips are subtracted, and (9) is added back. Exam tip: keep the middle term negative in ((a-b)2).

Which concept should I revise for this Mathematics MCQ?

Two (3y) strips are subtracted, and (9) is added back. Exam tip: keep the middle term negative in ((a-b)2).

What exam hint can help solve this Mathematics question?

दो (3y) पट्टियां घटती हैं और (9) वापस जुड़ता है। परीक्षा में ((a-b)2) में बीच का पद ऋणात्मक रखें।