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Math Help - basic algebra

  1. #16
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    Im Really Sorry Bobak...
    Im Just Asking To Check If Im Right...
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  2. #17
    Junior Member ihmth's Avatar
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    Quote Originally Posted by Graffitixgirl View Post
    Im Really Sorry Bobak...
    Im Just Asking To Check If Im Right...
    btw you can check if your answer is right by putting a value to the variable
    ex. (x - 5)(x + 2) = x^2 - 3x - 10
    so let x be uhm... 1

    (1 - 5)(1 + 2) = 1^2 - 3(1) - 10
    (-4)(3) = 1 - 3 - 10
    -12 = -12

    therefore our answer is correct
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  3. #18
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    just wondering,
    if there was a minus in the equation, e.g:
    (1+7k)(5-k)
    that would equal 5-k???
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  4. #19
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Graffitixgirl View Post
    is it ok if i ask more l8r?
    thx so much 4 ur encouragement
    yes you can come back. as long as you are willing to try more on your own. it realy doesn't help if we do problems for you. and especially if this is something to hand in, we can only give you hints, or at most solve one problem maybe, which has been done
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  5. #20
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Graffitixgirl View Post
    just wondering,
    if there was a minus in the equation, e.g:
    (1+7k)(5-k)
    that would equal 5-k???
    you are multiplying (5 - k) by something that is not 1. how would you get (5 - k)?
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