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  1. C

    Proving this identity? Help pleaseeee :)

    woah serious?
  2. C

    Please help with these questions????? THANKS SO MUCH

    ok i got to the step before the quadratic equation, but i wanted something neat, so i wolfram alpha'd it and the solution was x and something else. so i wanted to know how to factorise that step.
  3. C

    Please help with these questions????? THANKS SO MUCH

    umm the first one 1 + b/x
  4. C

    Please help with these questions????? THANKS SO MUCH

    somebody please help with a)
  5. C

    Please help with these questions????? THANKS SO MUCH

    hmm that didnt work haha
  7. C

    Please help with these questions????? THANKS SO MUCH

    <a href="http://www.codecogs.com/eqnedit.php?latex=(a^2 b)/x^2 @plus; (1@plus;b/x)a = 2b @plus; (a^2)/x" target="_blank"><img src="http://latex.codecogs.com/gif.latex?(a^2 b)/x^2 + (1+b/x)a = 2b + (a^2)/x" title="(a^2 b)/x^2 + (1+b/x)a = 2b + (a^2)/x" /></a>
  8. C

    Please help with these questions????? THANKS SO MUCH

    I dont know what latex is :D but the only bit you might be writing down is first term, it should be a^2 b not 'a to the power of 2b', if you know what i mean. hmm what do you mean for part b? factorise?
  9. C

    Please help with these questions????? THANKS SO MUCH

    Hey guys!:awesome: I am having some troubles : a) Find x in terms of a and b if: (a^2 b)/x^2 + (1+b/x)a = 2b + (a^2)/x b) Simplify (2^(2n) - 2^(n-1))/(2^n - 2^-1) c) Find smallest integers such that 12 < 2^m/n < 13 THANKS!!!!!
  10. C

    Exam techniques for HSC and Preliminary

    this really is an unnecessary thread, there are hundreds like this already in the forum
  11. C

    Help, maths!

    a(x^2-8x+16)+bx-4b+c ax^2 - 8ax + 16a + bx - 4b + c ax^2 - (8a+b)x + 16a - 4b + c so a = 5 -(8 x 5) = b = -37 so b = 3 15(5) - 4(3) +c = 68 so c = 0 Hence, 5(x-4)^2+ 3(x-4) + 0 (x-4) (5(x-4) + 3) = (x-4)(5x-17) Q2. b^2 - 4ac k^2 + 6k + 9 + 4k >= 0 k^2 + 10k + 9 >= 0 so it is real...
  13. C

    Question in Exam not in Syllabus- ability to query?

    ok thats fair enough its your choice. quite frankly though, i would be embarrassed to ask
  14. C

    Preliminary Past Papers

    hi spiral. do you have any prelim english papers? thanks :D
  15. C

    Question in Exam not in Syllabus- ability to query?

    calm down or dont reply. or dont post a pointless thread in the first place
  16. C

    Question in Exam not in Syllabus- ability to query?

    exactly this^
  17. C

    Question in Exam not in Syllabus- ability to query?

    lol
  19. C

    Question in Exam not in Syllabus- ability to query?

    lol
  20. C

    Question in Exam not in Syllabus- ability to query?

    haha you still dont get it? its not in the syllabus, the syllabus is for content
  21. C

    Question in Exam not in Syllabus- ability to query?

    woah i dont think you get it. the syllabus does not tell you that you are going to get extended responses, short answers, multiple choices. if you get a multiple choice in the exam, will you complain that it didnt say in the syllabus? the syllabus only tells you the CONTENT you are going to learn
  22. C

    Question in Exam not in Syllabus- ability to query?

    there are skills in science that are assumed knowledge. you wouldn't have been how to graph, or how to analyse the periodic table etc. because we learnt that stuff in year 7. there are no excuses, if you knew the info well enough, and understood how to make a timeline, you would have done well
  23. C

    Cramming success stories?

    lol
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