Fractional Equality

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March 28th 2011, 01:26 PM
kwikness

Fractional Equality

How does
$1 - \frac{8}{x^3} = \frac{x^3-8}{x^3}$ ?

Pretty rusty..
March 28th 2011, 01:27 PM
e^(i*pi)

$1 = \dfrac{x^3}{x^3}$

Now they have the same denominator you can subtract
March 28th 2011, 01:28 PM
kwikness

Thanks

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