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Math Help - I Need Math Help Please :(

  1. #1
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    I Need Math Help Please :(

    I Need help. Can you teach me how to be able to Expand simplify
    Last edited by Mike16; February 4th 2008 at 12:55 PM.
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  2. #2
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    Quote Originally Posted by Mike16 View Post
    I Need help. Can you teach me how to be able to simplify Eg.-(k+6)-(2+k)+(8+4k)
    -(k+6)-(2+h)+(8+4k)

    First, distribute each +/- sign into the parenthesis...

    -k-6-2-h+8+4k

    Order by variables (a + 2a - 3b + 4b + c + 2...)

    -h+4k - k + 6-2+8

    Add like variables, (e.g. 4a + 2a - 3a = 3a)

    3k-h+12
    Last edited by colby2152; February 5th 2008 at 12:38 PM.
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  3. #3
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    Ok i think i got it... Can any 1 else Help with Expand and simplify?
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  4. #4
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    Quote Originally Posted by Mike16 View Post
    I Need help. Can you teach me how to be able to Expand simplify
    Any 1 Please help me eg 4(2y-3) and -3(2y-2)+4(2y-1)
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  5. #5
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    Quote Originally Posted by Mike16 View Post
    Any 1 Please help me eg 4(2y-3) and -3(2y-2)+4(2y-1)
    Well, in order to expand and simplify, you have to remember your properties. The property you would use in those instances would be the distributive property.

    Let's start with the first example...

    4(2y-3)

    First distribute the 4. That means to multiply the 4 by 2y and then by -3.
    4*2y-4*3

    Now let's simplify.
    8y- 12


    -----------------------

    Now for the second example. This time we're going to break up the problem.
    -3(2y-2)+4(2y-1)

    Let's start off with -3(2y-2).

    First distribute the -3. That means to multiply the -3 by 2y and then by -2.
    -3*2y-3*-2
    This adds up to -6y+6.

    Now let's move onto 4(2y-1).

    First distribute the 4.
    4*2y -4*1

    This adds up to 8y-4.

    Now let's add both together, shall we?
    -6y+6+8y-4

    This equals
    2y+2
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    thank you
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  7. #7
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    Quote Originally Posted by colby2152 View Post
    ...

    -h+4k - k + 6-2+8

    Add like variables, (e.g. 4a + 2a - 3a = 3a)

    3k-h
    Hi,

    I don't want to pick at you but unfortunately you have forgotten to add 12:

    -h+4k - k + 6-2+8 = -h +3k +12
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  8. #8
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    Quote Originally Posted by earboth View Post
    Hi,

    I don't want to pick at you but unfortunately you have forgotten to add 12:

    -h+4k - k + 6-2+8 = -h +3k +12
    No offense taken... thank you earboth! I envisioned that six was negative instead of positive!
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