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    (7!+8!+9!)^2
    -----------------
    (4!+5!+6!)^2

    can you help me with this? the answers suppose be in the format of 2^a * 3^b * 5^c * 7^d.
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    (Original post by DusanZiga)
    (7!+8!+9!)^2
    -----------------
    (4!+5!+6!)^2

    can you help me with this? the answers suppose be in the format of 2^a * 3^b * 5^c * 7^d.
    Take a factor out of 7! on the top, and 4! on the bottom, then split into prime factors, and collect like terms
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    (Original post by tas1998)
    Take a factor out of 7! on the top, and 4! on the bottom, then split into prime factors, and collect like terms
    can you explain it little be further I still can't get the right answer.
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    Onxe you have it in terms of the prime factors, and square it out, the answer becomes clear. The factorization step is just a time saver. Youll notice that the answer is in terms of powers of 2 3 5 and 7, this is a clue.
    You also need to know power rules
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    (Original post by tas1998)
    Onxe you have it in terms of the prime factors, and square it out, the answer becomes clear. The factorization step is just a time saver. Youll notice that the answer is in terms of powers of 2 3 5 and 7, this is a clue.
    You also need to know power rules
    When I added the powers up I got 8 as an answer.
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    (Original post by DusanZiga)
    When I added the powers up I got 8 as an answer.
    Yes, I did too. 7²x5²x3^6x2^-2 is the correct answer, with questions like these you can check on a calculator.
 
 
 
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