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Thread: find out the length.

  1. #1
    Expert Member
    Join Date
    Jun 2006
    Answers
    410

    find out the length.

    The graph of y = 5(x-10) (x+2) cuts the x-axis at two points P and Q.

    What is the length of the line segment PQ?


  2. #2
    Contributing Member
    Join Date
    Oct 2006
    Answers
    67

    Re: find out the length.

    solving the equation 5(x-10)(x+2), we can the get x = 10 and x = -2. Substituting x on y will give 0. Since P, Q are 0, the length may be 0.
    Sorry, and guide me, if it is wrong.


  3. #3
    Expert Member
    Join Date
    Jun 2006
    Answers
    410

    Re: find out the length.

    Actually values of P and Q are (-2,0) and (10,0) respectively.

    Solving this we get 12 units as Length of the line segment PQ.


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