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Anonymous
(x + 4)(x + 2)
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x2 - 6x - 16 = (x + 2)(x - 8)
16 + 6x - x2 = 16 + 8x - 2x - x2 = 8*(2 + x) - x*(2 + x) = (8 - x)*(2 + x)
(x - 2)(x - 4)
x2-6x can be factored into x(x-6). Simply factor out the "x" from both factors.
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