Question:

Algebra help! please!!?

by  |  earlier

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how do you do..

( -x^2y^4) ( -x^3y^100

--------------------------------

x^9y

^=power, ---= divide

thanks!

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4 ANSWERS


  1. = (x^5y^104)

       ---------------

        x^9y

    =y^103

      ---------

        x^4

    In the numerator you add exponents together.  The negative x cancels out because a negative times a negative is positive. Then you do

    x^9 - x^5 so you can get all your x'es in the denominator. And then you do y^104 - y


  2. ( -x^2y^4) ( -x^3y^100

    --------------------------------  = [( -x^2y^4) ( -x^3y^100)]/(x^9y)

    x^9y

    =   +(x^5y^104)/(x^9y)

    =   y^103/x^4 = (y^103)(x^-4)

    Remember that (x^a)(x^b) = x^(a+b)

    and (x^a)/(x^b) = x^(a-b) = (x^a)(x^-b)

  3. ( -x^2y^4) ( -x^3y^100)/x^9y

    +(x^5y^104)/(x^9y)

    +y^103/x^4

  4. ( -x^2y^4) ( -x^3y^100

    --------------------------------

    x^9y

    is

    - - (x^-9 x^2x^4)(y^4y^100y^-1) == x^-2y^103= (y^103)/x^2

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