(2x−y)(2x+y)(4x2+y2)
(2x+y)(2x+y)(4x2+y2)
(2x−y)(2x−y)(4x2+y2)
(2x−y)(2x+y)(4x2−y2)
Correct answer is A
16x4−y4
= 24x4−y4
= (2x)4−y4
= ((2x)2)2−(y2)2
Using a2−b2 = (a - b)(a + b) identity
= ((2x)2−y2)((2x)2+y2)
Using the identity one more time
= (2x−y)(2x+y)((2x)2+y2)
∴ (2x−y)(2x+y)(4x2+y2)
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