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Math Help - Fill in the Blanks.

  1. #1
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    Fill in the Blanks.

    1. (4 / x + 2) = ( ? / (x + 2)(x + 1))

    2. (4x / x - 1) = ( ? / (x + 1)(x - 1))

    Thanks.
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  2. #2
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    Quote Originally Posted by elliotfsl View Post
    1. (4 / x + 2) = ( ? / (x + 2)(x + 1))

    2. (4x / x - 1) = ( ? / (x + 1)(x - 1))

    Thanks.
    If I understand your questions correctly then you have to multiply numerator and denominator so that the value of the quotient doesn't change(?). If so:

    to #2:

    \frac{4x}{x-1} = \frac{4x(x+1)}{(x+1)(x-1)} = \frac{4x^2 + 4x}{x^2-1}

    Do #1 in exactly the same way. Post your result, please.
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