(X²-3X)²-2X²+6X-8,
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(X²-3X)²-2X²+6X-8,
(X²-3X)²-2X²+6X-8,
(X²-3X)²-2X²+6X-8,
(X²-3X)²-2X²+6X-8
=(X²-3X)²-2(X²-3X)-8
=(X²-3X-4)(X²-3X+2)
=(X-4)(X+1)(X-2)(X-1)
(X²-3X)²-2X²+6X-8,
(X²-3X)²-2X²+6X-8,
(X²-3X)²-2X²+6X-8,
(X²-3X)²-2X²+6X-8
=(X²-3X)²-2(X²-3X)-8
=(X²-3X-4)(X²-3X+2)
=(X-4)(X+1)(X-2)(X-1)