Question 352511
{{{(10t^4-8t^3+15t-12)/(8-10t+12t^2-15t^3)}}}
={{{(2t^3*(5t-4)+3*(5t-4))/(2*(4-5t)+3t^2*(4-5t))}}}
={{{((2t^3+3)*(5t-4))/((2+3t^2)*(4-5t))}}}
={{{-(2t^3+3)/(2+3t^2)}}}