यदि ((x-7)2) का क्षेत्रफल मॉडल बनाया जाए, तो विस्तार कौन सा होगा?
If an area model of ((x-7)2) is made, what will be the expansion?
Explanation opens after your attempt
A. \(x^2-14x+49\)
Concept
In ((x-7)2), the middle term is (-14x) and the last term is (49). Exam tip: remember \(2\cdot 7\).
Why this answer is correct
The correct answer is A. \(x^2-14x+49\). In ((x-7)2), the middle term is (-14x) and the last term is (49). Exam tip: remember \(2\cdot 7\).
Exam Tip
((x-7)2) में बीच का पद (-14x) और अंतिम पद (49) है। परीक्षा में \(2\cdot 7\) याद रखें।
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