Math 221

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24x^5-15x^4/3x^2

  • Math 221 -

    Be careful with numerators and denominators and parentheses

    What you wrote is

    24x^5- (15x^4/3x^2)

    but I bet what you mean is

    (24x^5-15x^4)/3x^2

    which is

    24x^5/3x^2 - 15x^4/3x^2

    or
    8 x^3 - 5 x^2

  • Math 221 -

    No the one I wrote is correct you divide by 3x^2 and there was no parentheses

  • Math 221 -

    ok if you really mean that.
    I had a hunch it looked like

    24x^5-15x^4
    ------------
    3x^2

    but if you really mean
    24 x^5 - (15 x^4/3 x^2)
    then

    24 x^5 - 5 x^2

  • Math 221 -

    It looks like the first one

  • Math 221 -

    Go with my original reply then. I had a hunch that was the case because both 24 and 15 were divisible by 3.

  • Math 221 -

    when you have more than one term in a numerator or denominator, put a parenthesis around them

    a + b/c is just that , a alone plus b/c
    but
    (a+b) / c
    is
    a+b
    -----
    c
    or
    a/c + b/c

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