भुजा (x-2) वाले वर्ग में मध्य भाग का कुल क्षेत्रफल क्या होगा?
In a square with side (x-2), what will be the total area of the middle part?
Explanation opens after your attempt
B. (-4x)
Concept
In ((x-2)2), the middle part is \(2\cdot x\cdot -2=-4x\). Exam tip: keep the sign of the subtraction part.
Why this answer is correct
The correct answer is B. (-4x). In ((x-2)2), the middle part is \(2\cdot x\cdot -2=-4x\). Exam tip: keep the sign of the subtraction part.
Exam Tip
((x-2)2) में मध्य भाग \(2\cdot x\cdot -2=-4x\) है। परीक्षा में घटाव वाले भाग का चिन्ह रखें।
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