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  1. #1
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    help

    how do you do this????????

    a4-b6*j8=?
    a=3
    b=9
    j=8
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  2. #2
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    Quote Originally Posted by diamond1 View Post
    how do you do this????????

    a4-b6*j8=?
    a=3
    b=9
    j=8
    a^4 - b^6*j^8? Is that what you're trying to do?

    3^4 - 9^6*8^8

    81 - (531441*16777216) = -8,916,100,448,175

    For some reason I don't think that's you're trying to compute.
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  3. #3
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    if not that are you multiplying the terms ?

    so

    a*4 - (b*6 * j*8)?

    if it is this then

    3*4 - (9*6 * 8*8) = -3 444

    is that what you are trying to find
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  4. #4
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    Question wut?!

    how do u do this problem wuts the aswer i dont get it



    its simplifying fractions

    4x2, but 2 is a power to x then this is the rest of the problem y theres a line under that problem n the other part of the problem is under it
    so 14xy and then the 2 as a power again
    plz help!
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  5. #5
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by diamond1 View Post
    how do you do this????????

    a4-b6*j8=?
    a=3
    b=9
    j=8
    This was your original post.

    Quote Originally Posted by diamond1 View Post
    how do u do this problem wuts the aswer i dont get it



    its simplifying fractions

    4x2, but 2 is a power to x then this is the rest of the problem y theres a line under that problem n the other part of the problem is under it
    so 14xy and then the 2 as a power again
    plz help!
    This is your explanation of the post.

    I'll repeat your comment: wut??

    Let's start here:
    Quote Originally Posted by diamond1 View Post
    4x2, but 2 is a power to x
    There's no "2" in the problem! Where did you get this?

    -Dan
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  6. #6
    DragonKid44
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    a4-b6*j8=?
    a=3
    b=9
    j=8

    4*4 - 9*6 * 8*8 = ?

    16 - 54 * 64 = ?

    Using order of operations.......

    16 - 3456 = -3440

    Is this the answer your looking for?
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  7. #7
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    Quote Originally Posted by DragonKid44 View Post
    a4-b6*j8=?
    a=3
    b=9
    j=8

    4*4 - 9*6 * 8*8 = ?

    16 - 54 * 64 = ?

    Using order of operations.......

    16 - 3456 = -3440

    Is this the answer your looking for?
    3*4 - 9*6*8*8 =

    12 - 3456 = -3444
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  8. #8
    Senior Member ecMathGeek's Avatar
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    Quote Originally Posted by diamond1 View Post
    how do u do this problem wuts the aswer i dont get it



    its simplifying fractions

    4x2, but 2 is a power to x then this is the rest of the problem y theres a line under that problem n the other part of the problem is under it
    so 14xy and then the 2 as a power again
    plz help!
    lol.

    I know this is a math forum, so grammar is not a real big requirement to post in these forums, but isn't there a minimum amount of grammar a person should know?
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  9. #9
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by diamond1 View Post
    how do u do this problem wuts the aswer i dont get it



    its simplifying fractions

    4x2, but 2 is a power to x then this is the rest of the problem y theres a line under that problem n the other part of the problem is under it
    so 14xy and then the 2 as a power again
    plz help!
    please try to clarify diamond1. we represent powers with "^", so to say 4 times x squared, write 4x^2. to say "there's a line under" something, which means to divide, write "/". so for example, "4 times x squared divided by y squared" would be written 4x^2 / y^2 or even better, (4x^2)/y^2. and we also use "*" to mean times or multiply. now i am going to attempt to decode your problem. you said it was simplification so i will assume there is no equal sign (plus you never mentioned an equal sign when you were describing the problem in english). so i think what you are trying to say is that the problem is (4 times x squared times y) divided by 14 times x times y, tell me if i'm wrong.

    Simplify:

    (4x^2*y)/14xy .......ok, so we have an x^2 in the top and an x in the bottom, so we can cancel the x in the bottom by dividing it into the x^2 in the top. also, we have a y in the bottom that will cancel completely with the y in the top. 4 and 14 are both divisible by 2, so we can divide a 2 out of the top and bottom which will cancel. so yeah, that was confusing, its really hard to describe the process in words, well not really, but for me right now it is. to make it easier, you can split up the problem so that like variables are together. so here goes:

    (4x^2*y)/14xy
    = 4/14 * x^2/x * y/y
    = 2/7 * x * 1 ........now recombine
    = 2x/7

    or you can think of it this way. when we divide two nimbers having the same base, we subtract the powers of the one at the bottom from the one at the top.

    so x^m / x^n = x^(m - n)
    similarly, x^2 / x = x^(2 - 1) = x^1 = x

    and that's why the x^2 in the top cancels the x in the bottom and loses one power. the y in the top has the same power as the y in the bottom, so we are dividing a number by itself, so that piece is just 1. and i think you can simplify 4/14 on your own. so we just kind of put those answers together and we're done in one step

    (4x^2*y)/14xy = 2x/7
    Last edited by Jhevon; March 30th 2007 at 01:18 PM.
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