Question 331557
please make sure u write the equation correctly since im having to guess what it looks like
according to how you inputted the equation this is what it would look like
{{{z-(4/z)-5-z+(1/z)+5+z(-15/z^2)-25}}}
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however im pretty sure u meant this:
 {{{((z-4)/(z-5))-((z+1)/(z+5))+((z-15)/(z^2-25))}}} factor
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 {{{((z-4)/(z-5))-((z+1)/(z+5))+((z-15)/((z-5)(z+5)))}}} common denom
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 {{{((z-4)(z+5))/((z-5)(z+5))-((z+1)(z-5))/((z-5)(z+5))+(z-15)/((z-5)(z+5))}}} add fractions
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 {{{(((z-4)(z+5))-((z+1)(z-5))+(z-15))/((z-5)(z+5))}}} foil
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 {{{((z^2+z-20)-(z^2-4z-5)+(z-15))/((z-5)(z+5))}}} add like terms

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{{{(z^2+z-20-z^2+4z+5+z-15)/((z-5)(z+5))}}} add like terms
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{{{(6z-30)/((z-5)(z+5))}}} factor
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{{{6(z-5)/((z-5)(z+5))}}} cancelation
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{{{6cross(z-5)/(cross(z-5)(z+5))}}}
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{{{highlight(6/(z+5))}}}