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(x3 - 8) is factored thus: (x - 2)(x2 + 2x + 4) The easiest way to do this is to remember the formula: (a3 - b3) = (a - b)(a2 + ab + b2)
2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
x - 2 over 2 - x = (x - 2)/(2 - x) = -(2 - x)/(2 - x) = -1.
The factors of 8128 are:1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, 4064 and 8128.Hope this helps!Prime factors are 2, 2, 2, 2, 2, 2, 127Others are combinations of the prime factors, i.e.2 x 2 = 42 x 2 x 2 = 82 x 2 x 2 x 2 = 162 x 2 x 2 x 2 x 2 = 322 x 2 x 2 x 2 x 2 x 2 = 642 x 127 = 2542 x 2 x 127 = 5082 x 2 x 2 x 127 = 10162 x 2 x 2 x 2 x 127 = 20322 x 2 x 2 x 2 x 2 x 127 = 4064
2 x 2 x 2 x 3 x 3 x 3 = 216 2 x 2 x 2 x 2 x 2 x 3 x 3 = 288 2 x 2 x 2 x 3 x 3 x 5 = 360