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Math Help - quadradics

  1. #1
    Newbie RyanCouture's Avatar
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    quadradics

    question is:

    Can all quadratic equations be solved by factoring?

    Explain.

    this was not taught in my course (or i dont remember) can someone please give me a moderately detailed answer.

    thanks alot!
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  2. #2
    Newbie RyanCouture's Avatar
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    whoops, one more math question i need to be helped with

    its a word problem about what time a ball will hit the ground

    but the equation is:

    h=-4.9t^2 + 19.6t

    thanks again
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by RyanCouture View Post
    whoops, one more math question i need to be helped with

    its a word problem about what time a ball will hit the ground

    but the equation is:

    h=-4.9t^2 + 19.6t

    thanks again
    i suppose h is the height of the ball. the ball is on the ground when the height is zero, so you simply need to solve:

    -4.9t^2 + 19.6t = 0

    you will get two values for t, choose the appropriate one
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  4. #4
    Newbie RyanCouture's Avatar
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    alright thank you
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  5. #5
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by RyanCouture View Post
    alright thank you
    remember, if we can't factor then we can complete the square or use the quadratic formula.

    as far as the height question goes. why don't you try it and tell me your solution
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