X+2 Y=19 X-Y=4
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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
2³ , 5 , 7 and 9 because 2³ * 5 * 7 * 9 = 2520 Factor tree: 2520 2 x 1260 2 x 2 x 630 2 x 2 x 2 x 315 2 x 2 x 2 x 3 x 105 2 x 2 x 2 x 3 x 3 x 35 2 x 2 x 2 x 3 x 3 x 5 x 7 The prime factorization of 2520 is 2 x 2 x 2 x 3 x 3 x 5 x 7 or 23 x 32 x 5 x 7.