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Math Help - fractional exponent simplification

  1. #1
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    fractional exponent simplification

    7x^2 / x^3=
    7x^2-3=
    7x^-1=
    1/7x
    this is wrong, please point out how-so
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  2. #2
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    Quote Originally Posted by dymand68 View Post
    7x^2 / x^3=
    7x^2-3=
    7x^-1=
    1/7x
    this is wrong, please point out how-so

     <br />
7x^{-1}= \frac{7}{x}<br />
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  3. #3
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    this makes sense to me
    7x^2 / x^3=
    7x^2-3=
    7x^-1=
    (7/1)(1/x)=
    7/x
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  4. #4
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    Quote Originally Posted by dymand68 View Post
    x^-1=
    1/x
    ?
    Yep , that is correct.

    x^{-a} = \frac{1}{x^a}, \forall a \in \mathbb{R}

    \frac{7x^2}{x^3}= \frac{7\times x\times x}{x\times x\times x} = \frac{7}{x}
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