All Junior Cert Mathematics posts
  • avatar image

    maths jccccccccccc David smith

    hi study clix team,

    I am struggling with this mats question i got for homework, i was wondering if you could help me,

    x(x-3)(x+8)

    1. avatar image

      David smith

      HI CAN ANYBODY HELP ME WITH THE QUESTION ABOVE;)

    2. avatar image

      Dazzla16

      Here you go:

      x[x(x+8)-3(x+8)]

      x[x^2 + 8x - 3x -24]

      x[x^2 + 5x -24]

      x^3 + 5x^2 - 24x

    3. avatar image

      Dazzla16

      Note: x^2 means 'x to the power of 2'

    4. avatar image

      tipp-ex

      Yes. It means "X squared". Likewise, x^3 means x cubed

    5. avatar image

      AELT

      Just think of BIMDAS any time you get into this kind of situation

      You do you brackets first followed by indices, multiplication, division, addition, subtraction. If you even are doing the sum in the right order and the examener knows that you understand the method you will still receive marks ☺️

    6. avatar image

      David smith

      thanks for the help guys much appreciated;)

    7. avatar image

      Me

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