(2x-1)(4x^2-1) = (2x-1)^2 (2x+1)
8 x^3 - 4 x^2 - 2 x + 1
(-1 + 2 x)^2 (1 + 2 x)
7 and a half
8x^3-4x^2-2x+1
(8x^3-4x^2)+(-2x+1)
4x^2(2x-1)+-1(2x-1)
(4x^2-1)(2x-1)
BUT, 4x^2-1 can factor to (2x+1)(2x-1)
(2x+1)(2x-1)^2
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Verified answer
(2x-1)(4x^2-1) = (2x-1)^2 (2x+1)
8 x^3 - 4 x^2 - 2 x + 1
(-1 + 2 x)^2 (1 + 2 x)
7 and a half
8x^3-4x^2-2x+1
(8x^3-4x^2)+(-2x+1)
4x^2(2x-1)+-1(2x-1)
(4x^2-1)(2x-1)
BUT, 4x^2-1 can factor to (2x+1)(2x-1)
(2x+1)(2x-1)^2