Question 247125
{{{(10x^2-10)/(1-x^2)}}}
Notice the numerator and denominator can be factored:
{{{(10(x^2-1))/((1-x)(1+x))}}}
.
{{{(10(x-1)(x+1))/((1-x)(1+x))}}}
{{{(10(x-1))/(1-x)}}}
{{{(-10(-x+1))/(1-x)}}}
{{{(-10(1-x))/(1-x)}}}
{{{-10}}}