यदि (3a-2b) भुजा वाले वर्ग का मॉडल बनाया जाए, तो अंतिम विस्तार कौन-सा है?

If a model is made for a square of side (3a-2b), which final expansion is correct?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. \(9a^2-12ab+4b^2\)

Step 1

Concept

The subtracted middle term is \(2\cdot3a\cdot2b=12ab\). In exams, include both coefficients.

Step 2

Why this answer is correct

The correct answer is B. \(9a^2-12ab+4b^2\). The subtracted middle term is \(2\cdot3a\cdot2b=12ab\). In exams, include both coefficients.

Step 3

Exam Tip

बीच का घटा पद \(2\cdot3a\cdot2b=12ab\) है। परीक्षा में दोनों गुणांकों को शामिल करें।

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यदि (3a-2b) भुजा वाले वर्ग का मॉडल बनाया जाए, तो अंतिम विस्तार कौन-सा है? / If a model is made for a square of side (3a-2b), which final expansion is correct?

Correct Answer: B. \(9a^2-12ab+4b^2\). Explanation: बीच का घटा पद \(2\cdot3a\cdot2b=12ab\) है। परीक्षा में दोनों गुणांकों को शामिल करें। / The subtracted middle term is \(2\cdot3a\cdot2b=12ab\). In exams, include both coefficients.

Which concept should I revise for this Mathematics MCQ?

The subtracted middle term is \(2\cdot3a\cdot2b=12ab\). In exams, include both coefficients.

What exam hint can help solve this Mathematics question?

बीच का घटा पद \(2\cdot3a\cdot2b=12ab\) है। परीक्षा में दोनों गुणांकों को शामिल करें।