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Anonymous
(x + 7)(x2 - 7x + 49)
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x3-343
(x2 - xy + y2)(x + y)
x3 + x2 - 3x - 3 x(x2 + x - 3) - 3
If that's 2x2, the answer is (x + 2)(x2 + 4)
Since x3 is a factor of x5, it is automatically the GCF.