Question 750506
{{{(8(z+1)^3)/(24z^2+4z-20)}}}


{{{(8(z+1)^3)/(4(6z^2+z-5))}}}


{{{(8(z+1)^3)/(4(6z-5)(z+1))}}}


{{{(8(z+1)(z+1)^2)/(4(6z-5)(z+1))}}}


{{{(8*highlight((z+1))(z+1)^2)/(4(6z-5)highlight((z+1)))}}}


{{{(8*cross((z+1))(z+1)^2)/(4(6z-5)cross((z+1)))}}}


{{{(8*(z+1)^2)/(4(6z-5))}}}


{{{(2*(z+1)^2)/(6z-5)}}}


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{{{(8(z+1)^3)/(24z^2+4z-20)}}} 


simplifies to 


{{{(2*(z+1)^2)/(6z-5)}}}


which can be written as {{{(2*(z^2+2z+1))/(6z-5)}}} or {{{(2z^2+4z+2)/(6z-5)}}}


Restrictions: {{{z<>5/6}}} and {{{z<>-1}}}


These restrictions are put in place to avoid dividing by zero.