Question 12217
2x^2 + x + (-10/-12) + 8x + x^2 = {{{3x^2 + 9x + 5/6}}}


8x/(4-x) - 5x/(x-4)
= (-8x)/(x-4) - 5x/(x-4)
= {{{(-13x)/(x-4)}}}


4i/(6 + 5i) * (6 - 5i)/(6 - 5i)
= (24i - 20i^2)/(6^2 - 25i^2)
= {{{(20 + 24i)/(61)}}}