Results 1 to 13 of 13

Thread: Algebra Review Help

  1. #1
    Newbie
    Joined
    Nov 2009
    Posts
    6

    Algebra Review Help

    These are the questions i cannot seem to answers from my review, any help would be great!

    Factor the following trinomials (sanity check)

    1)$\displaystyle 6t^3 - 8t^2$ (COMPLETED)

    2) $\displaystyle 4p^2 - 12pg - 9q^2$ (COMPLETED)

    Identify the coefficents, factors and terms and like terms for the following

    3) $\displaystyle 26a^2 cd^3$ (COMPLETED)

    4) $\displaystyle 6(x-y) + (x+y) -3(x-y)$ (COMPLETED)

    Simplify

    5) $\displaystyle (t - 5x) - {[(6p^2 - x) - 9 ] - (6t + p^2 - x)}$ (COMPLETED)

    6) Subtract $\displaystyle 5 - 3x$ from the sum of $\displaystyle 6s + 5 - 2x $and $\displaystyle 4a^2 - 5x + 2$ (COMPLETED)

    Multiply the folliwng expressions and reduce where possible

    7) $\displaystyle (-4rs)(-3st^2)(-7rt)$ (COMPLETED)

    8) $\displaystyle (3x - 2)(2x^2 + x - 3)$ (COMPLETED)

    9) $\displaystyle (cx^3y)^5$ (COMPLETED)

    Divide the following expressions

    10) $\displaystyle \frac{-12a^5b^4c^8}{18a^5b^2c^5}$ (COMPLETED)

    11) $\displaystyle \frac{a^2b^3 - 2a^3b^4 + ab + a^2b^2}{-ab}$

    Factor

    12) $\displaystyle 18x^2y^2 - 30x^3y^3 + 54x^3y$

    13) $\displaystyle xy + x + 3y + 3$ (COMPLETED)
    Last edited by Keat; Nov 16th 2009 at 09:24 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1

    well the first one is

    $\displaystyle 6t^3 - 8t^2$

    $\displaystyle 2t^2(3t-8)$

    the next one may not be written correct
    do you mean

    $\displaystyle 4p^2 - 12pq - 9q^2$

    instead?



    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Nov 2009
    Posts
    6
    Quote Originally Posted by bigwave View Post


    $\displaystyle 4p^2 - 12pq + 9q^2$


    Its actually a positive, sorry

    Thanks for the reply!!
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1
    $\displaystyle 4p^2 - 12pq + 9q^2$
    this factors into

    $\displaystyle
    (2p-3q)(2p-3q) \ or \ (2p-3q)^2
    $
    you can use the quadractic formula to find the coefiecents but
    this one the hint is the a and c parts are squares.

    I will do the rest of them if you want....
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Nov 2009
    Posts
    6
    Id be more than in debt to you if you could help me out with them,

    Im really trying my best to get all 100+ questions done, those are just the ones ive had trouble with

    If you wouldn't mind, Id be so grateful!
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1
    Identify the coefficents, factors and terms and like terms for the following

    recall that

    coefficents is a constant the mulitplies to the varable

    factors are one or more expressions that are mulitplied to get a product

    like terms are... 6(x-y) and -3(x-y) they just have different coeficents

    expressions are Symbols that represent numbers or operations. A way of writing something that uses numbers and symbols.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1

    simplify

    $\displaystyle (t - 5x) - [(6p^2 - x) - 9 ] - (6t + p^2 - x)
    $

    first expand the brackets

    $\displaystyle t - 5x - 6p^2 + x + 9 - 6t - p^2 + x$

    combine like terms

    $\displaystyle -7p^2 - 3x - 5t + 9 $

    other possiblities too...
    Follow Math Help Forum on Facebook and Google+

  8. #8
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1
    6) Subtract from the sum of and

    $\displaystyle 6s + 5 - 2x + 4a^2 - 5x + 2 - 5 + 3x$

    combine like terms

    $\displaystyle 6s -4x + 4a^2 + 2$
    Follow Math Help Forum on Facebook and Google+

  9. #9
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1
    7)

    $\displaystyle -84r^2s^2t^3$
    Follow Math Help Forum on Facebook and Google+

  10. #10
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1
    $\displaystyle (3x - 2)(2x^2 + x - 3)$

    $\displaystyle 2x^2(3x-2) + x(3x - 2) -3(3x -2)$

    $\displaystyle 6x^3-4x^2+3x^2-2x-9x^2+6$

    $\displaystyle 6x^3-10x^2-2x+6$
    Follow Math Help Forum on Facebook and Google+

  11. #11
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1


    $\displaystyle \frac{-2b^2c^3}{3}$
    Follow Math Help Forum on Facebook and Google+

  12. #12
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1



    $\displaystyle = \ \frac{(ab)(ab^2-2a^2b^3+1+ab)}{-ab}$

    $\displaystyle = \ -(ab^2-2a^2b^3+1+ab)$
    Follow Math Help Forum on Facebook and Google+

  13. #13
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1
    12)


    $\displaystyle
    6x^2y(3y-5xy^2+9x)$


    good luck on your test
    these questions ..... have too be very carefull
    easy to make mistakes....
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Algebra review help
    Posted in the Algebra Forum
    Replies: 3
    Last Post: Jan 14th 2009, 06:47 PM
  2. Algebra Review for Test
    Posted in the Algebra Forum
    Replies: 1
    Last Post: Oct 5th 2008, 07:30 AM
  3. Algebra Review
    Posted in the Algebra Forum
    Replies: 5
    Last Post: Aug 28th 2008, 10:07 PM
  4. Pre-Algebra Review Sheet
    Posted in the Algebra Forum
    Replies: 5
    Last Post: Nov 11th 2007, 01:48 PM
  5. review of algebra 2
    Posted in the Algebra Forum
    Replies: 2
    Last Post: Sep 10th 2005, 05:19 PM

Search Tags


/mathhelpforum @mathhelpforum