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Math Help - basic algebra

  1. #1
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    Exclamation basic algebra

    pls help with following questions! im really stuck... and pls explain with full setting out,,, im w8ing for a genius to save me!!!
    (s+1)(3s+2)
    (d-2)(3d+5)
    (a+3)(4-1)
    (a+b)(a-b)
    (3s-t)^2
    (h-5)(2h+4)
    (5-f)^2
    (1+2x)(4+3x)
    (h+3)(3h-4)
    (1+7k)(5-k)
    (3s-5t)(4s-2t)
    (8-5r)(1-r)
    (2y-7z)(5y-4z)
    (2d-3c)(2d+3c)
    (t+7)^2
    (3+y)^2
    (a+2b)^2
    (2e+3f)^2
    (p-5)^2
    (x-y)^2
    (d-2e)^2
    (3p-5q)^2
    I'm Sorry for the huge workload
    thanks SO MUCH
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  2. #2
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    Quote Originally Posted by Graffitixgirl View Post
    pls help with following questions! im really stuck... and pls explain with full setting out,,, im w8ing for a genius to save me!!!
    (s+1)(3s+2)
    (d-2)(3d+5)
    (a+3)(4-1)
    (a+b)(a-b)
    (3s-t)^2
    (h-5)(2h+4)
    (5-f)^2
    (1+2x)(4+3x)
    (h+3)(3h-4)
    (1+7k)(5-k)
    (3s-5t)(4s-2t)
    (8-5r)(1-r)
    (2y-7z)(5y-4z)
    (2d-3c)(2d+3c)
    (t+7)^2
    (3+y)^2
    (a+2b)^2
    (2e+3f)^2
    (p-5)^2
    (x-y)^2
    (d-2e)^2
    (3p-5q)^2
    I'm Sorry for the huge workload
    thanks SO MUCH
    You have got to be kidding!!

    Do yourself a favour - read this.
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  3. #3
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    I can only assume that your question is to expand the following expressions.
    What problem are yo having here ? have you been showed how to do anythng like this before ?

    (s+1)(3s+2) = s \cdot 3s + s \cdot 2 + 1 \cdot 3s + 1 \cdot 2
    \Rightarrow (s+1)(3s+2) = 3s^2 + 2s + 3s + 2
    \Rightarrow (s+1)(3s+2) = 3s^2 + 5s + 2

    can you follow that ?
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  4. #4
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    Quote Originally Posted by mr fantastic View Post
    You have got to be kidding!!

    Do yourself a favour - read this.
    oh w8
    mayb i havent explained the situation properly.
    im 12, you see. not a kind a genius uni student
    im sorry
    can someone just explain ONE of the equations?
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  5. #5
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    Quote Originally Posted by Graffitixgirl View Post
    oh w8
    mayb i havent explained the situation properly.
    im 12, you see. not a kind a genius uni student
    im sorry
    can someone just explain ONE of the equations?
    When i was 12 I knew how to read. someone has explained how to do one of them, Read my post.

    you will be surprised how many of you academic issues can be solved with a tiny bit of reading.

    N.B Please make an effort to use correct English.
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  6. #6
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    can i try one?
    so....
    (a+b)(a-b)
    =a^2-ab+ab-b^2?
    so...
    =a^2-b^2?
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  7. #7
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    Quote Originally Posted by Graffitixgirl View Post
    can i try one?
    so....
    (a+b)(a-b)
    =a^2-ab+ab-b^2?
    so...
    =a^2-b^2?
    Yes
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  8. #8
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    Quote Originally Posted by Graffitixgirl View Post
    can i try one?
    so....
    (a+b)(a-b)
    =a^2-ab+ab-b^2?
    so...
    =a^2-b^2?
    Well done.
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  9. #9
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    is it ok if i ask more l8r?
    thx so much 4 ur encouragement
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  10. #10
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    what about this? so sorry
    (3st)^2
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  11. #11
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    Quote Originally Posted by Graffitixgirl View Post
    what about this? so sorry
    (3st)^2
    (3st)^2 =3^2s^2t^2

    You really should take some time to actually learn all this basic algebra as opposed to rushing your homework to please your teacher.

    I am not going not give you any further help. I suggest you do what you can and ask your teacher for help with what your stuck on tomorrow
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  12. #12
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    Quote Originally Posted by Graffitixgirl View Post
    what about this? so sorry
    (3st)^2
    (3st)^2 => 3^2s^2t^2 then 9s^2t^2
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  13. #13
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    trial:
    (h-5)(2h+4)
    =2h^2+4h-10h-20
    =2h^2-6h-20
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  14. #14
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    am i correct?
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  15. #15
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    If I was a moderator I would close this thread.

    Yes you are right and if you apply the same method you will get the rest of your homework right as well. You clearly lack confidence in what you are doing because your not really sure about this topic. I strongly advise you read the link that Mr F gave you, read your books examples and ask your teacher for help with your problems.
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