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Question

Factorise
4x2−9y2

A
(2x+ 3y)(2x-3y)
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B
(x+ 3y)(2x+3y)
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C
(4x+ y)(2x-3y)
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D
(4x+ 3y)(2x+3y)
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Solution

The correct option is D (2x+ 3y)(2x-3y)
4x29y2
=(2x)2(3y)2, Using a2b2=(a+b)(ab)
=(2x+3y)(2x3y)

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