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?
Explanation opens after your attempt
B. \(9a^2-12ab+4b^2\)
Concept
The subtracted middle term is \(2\cdot3a\cdot2b=12ab\). In exams, include both coefficients.
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.
Exam Tip
बीच का घटा पद \(2\cdot3a\cdot2b=12ab\) है। परीक्षा में दोनों गुणांकों को शामिल करें।
Login to save your score, XP, coins and progress.
