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Factorise:
(i) \(4x^2 + 9y^2 + 16z^2 + 12xy – 24yz – 16xz=\)
(ii) \(2x^2 + y^2 + 8z^2 – 2\sqrt{2}xy + 4\sqrt{2}yz – 8xz=\)
Answer variants:
\((2x + 3y – 4z) (2x + 3y – 4z)\)
\((2x - 3y – 4z) (2x -3y – 4z)\)
\((−\sqrt{2}x + y + 2\sqrt{2}z) (−\sqrt{2}x + y + 2\sqrt{2}z)\)
\( (\sqrt{2}x + y + 2\sqrt{2}z) (\sqrt{2}x + y + 2\sqrt{2}z)\)
\((−\sqrt{2}x -y + 2\sqrt{2}z) (−\sqrt{2}x -y + 2\sqrt{2}z)\)
\((2x -3y +z) (2x -3y – z)\)
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