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Math Help - factoring expressions

  1. #1
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    factoring expressions

    Please assist me in completely factoring the following expressions: (the numbers are exponents) 1)16t3 - 50t2 + 36t I have 2t (8t+9)(T+2) is this correct???
    2) 48u4v4 - 18u2v2 - 3u8v5 I'm stuck on this one
    3) 4q2 + 27r ? Thank you!
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  2. #2
    Super Member bigwave's Avatar
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    Cool

    Quote Originally Posted by jay1 View Post
    Please assist me in completely factoring the following expressions: (the numbers are exponents) 1)16t3 - 50t2 + 36t I have 2t (8t+9)(T+2) is this correct???
    2) 48u4v4 - 18u2v2 - 3u8v5 I'm stuck on this one
    3) 4q2 + 27r ? Thank you!
    2)
    48u^4v^4-18u^2v^2-3u^8v^5

    3u^2v^2(16u^2v^2-6-u^6v^3)

    are you sure these exponents are correct?
    Last edited by bigwave; January 11th 2010 at 10:02 PM.
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  3. #3
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    factoring expressions

    Yes, Big Wave thank you!
    Can you assist me with questions 1 and 3? I would appreciate it greatly.
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  4. #4
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    Quote Originally Posted by jay1 View Post
    Please assist me in completely factoring the following expressions: (the numbers are exponents)

    1) 16t^3 - 50t^2 + 36t

    I have 2t (8t+9)(t+2) is this correct???
    Thank you!
    Hi jay1,

    Almost. You missed the sign.

    16t^3-50t^2+36t=2t(8t-9)(t-2)
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  5. #5
    A riddle wrapped in an enigma
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    Quote Originally Posted by jay1 View Post
    Please assist me in completely factoring the following expressions: (the numbers are exponents)

    3) 4q^2 + 27r ? Thank you!
    jay1,

    It would appear that this one is already in its simplest form. Make sure you copied it correctly.
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  6. #6
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    Thanks I copied it incorrectly. It should read 4q2 + 27r4. Thanks for your help. Also to factor 2a3 - 128, is this prime?
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  7. #7
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    Quote Originally Posted by jay1 View Post
    Thanks I copied it incorrectly. It should read 4q2 + 27r4. Thanks for your help. Also to factor 2a3 - 128, is this prime?
    Hi jay1,

    You still can't do anything with 4q^2+27r^4

    And for 2a^3-128, first factor out a 2.

    2(a^3-64) and recognize that a^3-64 is the difference of two cubes. You should know how to handle that one, don't you?

    2(a^3-4^3)=
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  8. #8
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    Masters, 2 (a-4)3 ??? (the 3 being an exponent)
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