\( 4x^2+12x+9 \) किसका वर्ग है?
\( 4x^2+12x+9 \) is the square of what?
Explanation opens after your attempt
B. ( (2x+3)2 )
Concept
(4x-2=(2x)2) and \(9=3^2\). The middle term is \(2\cdot2x\cdot3=12x\).
Why this answer is correct
The correct answer is B. ( (2x+3)2 ). (4x-2=(2x)2) and \(9=3^2\). The middle term is \(2\cdot2x\cdot3=12x\).
Exam Tip
(4x-2=(2x)2) और \(9=3^2\) है। बीच का पद \(2\cdot2x\cdot3=12x\) है।
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