4x(4x^2 + 3x + 1)
(2x + 1)(2x + 1) or (2x + 1)2 so x = -0.5
2(x - 1)(2x + y)
4x2 + 1 + x2 + 3 = 5x2 + 4
X=1/2
(2x-1)(2x-1) = 4x^2 -4x + 1
x = -½
4x(4x^2 + 3x + 1)
(2x + 1)(2x + 1) or (2x + 1)2 so x = -0.5
2(x - 1)(2x + y)
4x2 + 1 + x2 + 3 = 5x2 + 4
x2 + 4x + 3 =(x + 3) (x + 1)
(4x + 1)(2x + 3)
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There is no rational factorisation.
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)
X=1/2