Results 1 to 12 of 12

Thread: Algebra 2 help

  1. December 15th 2009, 07:42 PM #1
    schecter22107
    schecter22107 is offline
    Newbie
    Joined
    Dec 2009
    Posts
    4

    Algebra 2 help

    Need help with Algebra 2 test
    ok i have a study guide and cant seem to find the answers or how to do it
    can anyone write the steps of these problems
    8x to the 3 power +1
    *8x^3+1

    *(x-2)^3

    * 5(2u+3)>2(u-3)+u

    i have the answer but dont know how to do them
    please help with steps
    Follow Math Help Forum on Facebook and Google+
  2. December 15th 2009, 07:53 PM #2
    pickslides
    pickslides is offline
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,234
    Thanks
    26
    Quote Originally Posted by schecter22107 View Post
    Need help with Algebra 2 test
    ok i have a study guide and cant seem to find the answers or how to do it
    can anyone write the steps of these problems
    8x to the 3 power +1
    *8x^3+1

    *(x-2)^3

    * 5(2u+3)>2(u-3)+u

    i have the answer but dont know how to do them
    please help with steps
    what are you trying to do with these expressions? Solve them? If so what are they equal to? or maybe graph them?

    You need to give us more information. At the moment they are just numbers on a page.
    Follow Math Help Forum on Facebook and Google+
  3. December 15th 2009, 07:53 PM #3
    VonNemo19
    VonNemo19 is offline
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    Quote Originally Posted by schecter22107 View Post
    Need help with Algebra 2 test
    ok i have a study guide and cant seem to find the answers or how to do it
    can anyone write the steps of these problems
    8x to the 3 power +1
    *8x^3+1

    *(x-2)^3

    * 5(2u+3)>2(u-3)+u

    i have the answer but dont know how to do them
    please help with steps
    The first is a sum of cubes. Factor according to the formula that you were given. a=2x and b=1.

    I assume that you are to expand the second. So foil...

    For the third

    5(2u+3)>2(u-3)+u
    Get rid of the parentheses by distributing
    10u+15>2u-6+u
    10u+15>3u-6
    7u>-21
    u>-3
    Follow Math Help Forum on Facebook and Google+
  4. December 15th 2009, 07:56 PM #4
    schecter22107
    schecter22107 is offline
    Newbie
    Joined
    Dec 2009
    Posts
    4
    factor the first one
    multiply the second one
    solve the last one
    Follow Math Help Forum on Facebook and Google+
  5. December 15th 2009, 07:57 PM #5
    VonNemo19
    VonNemo19 is offline
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    Quote Originally Posted by schecter22107 View Post
    factor the first one
    multiply the second one
    solve the last one
    exactly.
    Follow Math Help Forum on Facebook and Google+
  6. December 15th 2009, 08:04 PM #6
    schecter22107
    schecter22107 is offline
    Newbie
    Joined
    Dec 2009
    Posts
    4
    for the second one the answer is x^3-6x^2+12x-8
    i did foil but i dont know how to get the 12x
    Follow Math Help Forum on Facebook and Google+
  7. December 15th 2009, 08:09 PM #7
    VonNemo19
    VonNemo19 is offline
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    Quote Originally Posted by schecter22107 View Post
    for the second one the answer is x^3-6x^2+12x-8
    i did foil but i dont know how to get the 12x
    (x-2)^3=(x-2)(x^2-4x+4)=x^3-4x^2+4x-2x^2+8x-8

    Now collect like terms.
    Follow Math Help Forum on Facebook and Google+
  8. December 15th 2009, 08:10 PM #8
    pickslides
    pickslides is offline
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,234
    Thanks
    26
    Quote Originally Posted by VonNemo19 View Post
    I assume that you are to expand the second. So foil...

    Quote Originally Posted by VonNemo19 View Post
    exactly.
    To use the word exactly, no assumptions would be required?

    Follow Math Help Forum on Facebook and Google+
  9. December 15th 2009, 08:13 PM #9
    VonNemo19
    VonNemo19 is offline
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    Quote Originally Posted by pickslides View Post
    To use the word exactly, no assumptions would be required?

    I tutor math at a college. I deal with this every day.
    Follow Math Help Forum on Facebook and Google+
  10. December 15th 2009, 08:16 PM #10
    schecter22107
    schecter22107 is offline
    Newbie
    Joined
    Dec 2009
    Posts
    4
    thank you
    Follow Math Help Forum on Facebook and Google+
  11. December 15th 2009, 08:20 PM #11
    VonNemo19
    VonNemo19 is offline
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    Your welcome.
    Follow Math Help Forum on Facebook and Google+
  12. December 15th 2009, 08:27 PM #12
    pickslides
    pickslides is offline
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,234
    Thanks
    26
    Quote Originally Posted by VonNemo19 View Post
    I tutor math at a college. I deal with this every day.
    I know the feeling as I also have this experience.
    Follow Math Help Forum on Facebook and Google+
« smallest number | Area of isosceles right triangle »

Similar Math Help Forum Discussions

  1. Is a countable union/intersection of sigma-algebra also a sigma-algebra?
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: February 4th 2011, 08:39 AM
  2. Is linear algebra considered to be a type of abstract algebra?
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: December 6th 2010, 03:03 PM
  3. Algebra or Algebra 2 Equation Help Please?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: May 12th 2010, 11:22 AM
  4. terminology about ring/algebra in abstract algebra and measure theory
    Posted in the Differential Geometry Forum
    Replies: 0
    Last Post: April 23rd 2010, 11:37 PM
  5. i need help NOW with my algebra please
    Posted in the Algebra Forum
    Replies: 19
    Last Post: April 17th 2008, 07:08 PM

Search Tags


/mathhelpforum @mathhelpforum