Expand (2x + 3y)(2x – 3y)(4x2 + 9y2) using identity.
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Step-by-step explanation:
(2x + 3y)(2x-3y)(4x2 + 9y2)
(2x + 3y)(2x-3y)(2x)2 + (3y)2
{(2x)2 - (3y)2}{(2x)2 + (3y)2}
(2x2-3y2+2x2 + 3y2)(2x2 - 3y2 - 2x2 -3y2)
4x2 × (- 9 y2)
-36x2y2
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