algebra

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Essay. Show all work. Find the quotient.

49a^2-b^2
---------
7a-b

  • algebra -

    factor the numerator, it is a difference of squares

  • algebra -

    please get into more detail more for me to understand Algebra is one my weakest subjects

  • algebra -

    These sites will help you understand this problem and its solution.

    http://www.purplemath.com/modules/factquad.htm

    http://www.purplemath.com/modules/specfact.htm

    http://www.youtube.com/watch?v=wvFr1BqU4g8

  • algebra -

    plz help me

  • Algebra -

    Here is an example:

    9x^2 - 25y^2
    ------------
    3x - 5y


    Factor the numerator, its a difference of perfect squares.

    9x^2 - 25y^2 = (3x - 5y) (3x + 5y)


    (3x - 5y)(3x + 5y)

    (3x)(3x) = 9x^2

    (3x)(5y) = 15xy

    (-5y)(3x)= -15xy

    (-5y)(5y)= -25y^2

    9x^2 + 15xy - 15xy -25y^2

    9x^2 -25y^2 = (3x - 5y)(3x + 5y)
    ---------------------------------



    9x^2 - 25y (3x - 5y)(3x +5y)
    ---------- = ---------------- = 3x +5y
    3x - 5y 3x - 5y

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