((2x-3)2) का सही विस्तार क्या है?
What is the correct expansion of ((2x-3)2)?
Explanation opens after your attempt
B. \(4x^2-12x+9\)
Concept
The middle term is \(-2\cdot2x\cdot3=-12x\). Exam tip: square the whole (2x) as \(4x^2\).
Why this answer is correct
The correct answer is B. \(4x^2-12x+9\). The middle term is \(-2\cdot2x\cdot3=-12x\). Exam tip: square the whole (2x) as \(4x^2\).
Exam Tip
मध्य पद \(-2\cdot2x\cdot3=-12x\) होगा। परीक्षा में पूरे (2x) का वर्ग \(4x^2\) लें।
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