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  1. #1
    Mr. Maximan1 maximan1's Avatar
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    Algebra Hlep Please

    Hlep me with this Albebra.
    This is not factorable, correct?

    30x squared + 11x - 30 = 0

    It is not factorable, right?

  2. #2
    My name is Mike, not Cal
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    Incorrect.

    (5x+6)(6x-5)
    "I got my lips chewed off by a dingo!" --David Letterman

  3. #3
    Mr. Maximan1 maximan1's Avatar
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    Thanks

  4. #4
    Mr. Maximan1 maximan1's Avatar
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    Can you explain por favor?

  5. #5
    later free_pizza's Avatar
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    Quote Originally Posted by maximan1 View Post
    Can you explain por favor?
    oh god... do some #$%ing reading in your book, and dont say it doesnt explain it...

  6. #6
    Mr. Maximan1 maximan1's Avatar
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    Quote Originally Posted by free_pizza View Post
    oh god... do some #$%ing reading in your book, and dont say it doesnt explain it...
    What is this "reading" you speak of?

  7. #7
    Dude wheres my guads? skinnyone's Avatar
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    (-b +- sqrt( b^2 - 4ac))/2a will also tell you of its factors.

  8. #8
    Mr. Maximan1 maximan1's Avatar
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    The QUADRATIC FORMULA didn't work for me.

  9. #9
    My name is Mike, not Cal
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    The factors, if any, would be of the form (Ax+B) and (Cx+D), where

    AC=30

    BD=-30

    AD+BC=11.

    There aren't many pairs of numbers that, when multiplied together, give you 30. These pairs are 1 & 30, 2 & 15, 3 & 10, 5 & 6. One of those pairs will be your choice for A & C, and one pair (possibly the same pair) will be your B & D (actually, B or D will be the negative of one of the numbers in one of the pairs).

    You just have to start testing different combinations of these pairs. You don't even need to worry about the negative sign at first. Just look for pairs such that the product of one number in one pair and one number in the other pair is 11 away from the product of the other number in each pair. For example, take the pairs 5 & 6 and 5 & 6. 5*5=25, 6*6=36. Their difference is 11.

    Go on to figure out where the negative sign goes.
    "I got my lips chewed off by a dingo!" --David Letterman

  10. #10
    Dude wheres my guads? skinnyone's Avatar
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    Quote Originally Posted by maximan1 View Post
    The QUADRATIC FORMULA didn't work for me.
    How so?

    -11 +- sqrt(121+3600)/60 right? whats not working in that equation?

    it gives you (-11+- 61)/60 which yields 5/6 and 6/5

    x=5/6 => 6x-5=0
    x=6/5 => 5x-6=0

  11. #11
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    Why are you doing his homework? Cryptic hints and guidance is what he needs That way he thinks it through and really learns
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  12. #12
    Mr. Maximan1 maximan1's Avatar
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    Quote Originally Posted by Tom Stormcrowe View Post
    Why are you doing his homework? Cryptic hints and guidance is what he needs That way he thinks it through and really learns
    I have everything done except for this problem, I got stuck on it. I was studying for finals (tomorrow) and I couldn't get past this.

  13. #13
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    Teasing you Max

    You'll kick butt on the exam....relax and do the easy problems first and then go back and rework the problems you got stuck on. That way, you'll get more done if you run into time issues. Also, the easier problems will often give you hints on the harder ones. Strategy AND knowlege.

    Quote Originally Posted by maximan1 View Post
    I have everything done except for this problem, I got stuck on it. I was studying for finals (tomorrow) and I couldn't get past this.
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  14. #14
    Mr. Maximan1 maximan1's Avatar
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    Quote Originally Posted by Tom Stormcrowe View Post
    Teasing you Max

    You'll kick butt on the exam....relax and do the easy problems first and then go back and rework the problems you got stuck on. That way, you'll get more done if you run into time issues. Also, the easier problems will often give you hints on the harder ones. Strategy AND knowlege.
    All problems are easy problems for me

  15. #15
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    Quote Originally Posted by maximan1 View Post
    All problems are easy problems for me
    Except the one you just got stuck on......
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  16. #16
    Mr. Maximan1 maximan1's Avatar
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    Quote Originally Posted by Tom Stormcrowe View Post
    Except the one you just got stuck on......
    Nah, I was just testing you guys

  17. #17
    later free_pizza's Avatar
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    Quote Originally Posted by Tom Stormcrowe View Post
    You'll kick butt on the exam.
    Nope. He just wont.

  18. #18
    Mr. Maximan1 maximan1's Avatar
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    Quote Originally Posted by free_pizza View Post
    Nope. He just wont.
    You fail at life.

    Go die.

    I am offended by your comment.

  19. #19
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    Any polynomial that can be expressed in "Ax^2 + Bx + C" (assuming A, B, and C are rational numbers) can be factored via the quadratic formula. It may be ugly, bristling with square roots, but it can be done.

  20. #20
    Your imaginary friend. fuzzbox's Avatar
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    You spelt help wrong, what do you expect?

    Every passing minute is another chance to turn it all around.

  21. #21
    Mr. Maximan1 maximan1's Avatar
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    Quote Originally Posted by fuzzbox View Post
    You spelt help wrong, what do you expect?
    I did that on purpose.

  22. #22
    Your imaginary friend. fuzzbox's Avatar
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    And Algebra too, right? Of course what was I thinking.

    Every passing minute is another chance to turn it all around.

  23. #23
    Squirrelly Member trsidn's Avatar
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    Quote Originally Posted by maximan1 View Post
    The QUADRATIC FORMULA didn't work for me.
    Quote Originally Posted by Nicodemus View Post
    Yet more proof that I'm.. well, pretty much right about everything.

  24. #24
    You Know!? For Kids! jsharr's Avatar
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    Quote Originally Posted by maximan1 View Post
    I did that on purpose.


    yeah, so did these guys.
    Are you a registered member? Why not? Click here to register. It's free and only takes 27 seconds! Help out the forums, abide by our community guidelines.
    Quote Originally Posted by colorider View Post
    Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.

  25. #25
    Dude wheres my guads? skinnyone's Avatar
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    Quote Originally Posted by trsidn View Post

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