Greatest commom factors..Help?

1.)write out the prime factorization of 56 and 84. What is the greatest commom factor? what is the least common multiple?

2.) Write out the prime factorizations of 108 and 112. What is the greatest common factor? what is the least common multiple

1 Answer

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  • 1 decade ago
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    greatest common factor: 28

    work:

    56

    1,2,4,7 ,8,14,28

    84:

    1,2.3,4,6,7,12,14,21,28,42

    least common multiple: 168

    56:

    56,112, 168,224,280,336,392,448

    84:

    84,168,

    Greatest Factor: 4

    108

    1,2,3,4,6,9,12,27,36,54

    112

    1,2,4,7,8,14,16,28,56,

    Least Common Multiple: sorry I tried but so far got nothing

    108

    108,216,324,432,540,648,756,864,972,1080,

    1188,1296,1404,1512,1620,1728,1836,1944,2052, 2160,2268,2376,2484,2592,2700,2808,2916,3132,3240,3348,3456,3564

    112

    112,224,336,448,560,672,784,896,1008,

    1120,1232,1344,1456,1568,1680,,1792,1904,2016,2128,2240,2352,2464,2576,2688,2800,2912,3024,3136,3248

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