0
RazzleXcore ∙
x + 3
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X2 - 8X + 15 = (X - 3)(X - 5)
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)
2(x + 3)(x + 1)
(x+4)(x+4), or (x+4)^2.
7