(a + b)2 = a2 + 2ab + b2⇒ (2x – 3y)2 = 4x2 + 9y2 – 12xySo B is the correct option.

Q. 1 H4.6( 7 Votes )

The expansion of A. 2x² + 3y² + 6xy

B. 4x² + 9y² – 12xy

C. 2x² + 3y² – 6xy

D. 4x² + 9y² + 12xy

Answer :

(a + b)² = a² + 2ab + b²

⇒ (2x – 3y)² = 4x² + 9y² – 12xy

So B is the correct option.

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The expansion of A. 2x2 + 3y2 + 6xyB. 4x2 + 9y2 – 12xyC. 2x2 + 3y2 – 6xyD. 4x2 + 9y2 + 12xy