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The GCF is 2x.
(2x - 9)(2x - 9) or (2x - 9)2
If that's - 8x - 5, the answer is (2x + 1)(2x - 5). If that's + 8x + 5, it gets ugly in a hurry.
That would be 2X the chases, and 2X the searching.
x2+2x-63 = (x-7)(x+9) when factored