Question

Resolver a^3/a^3+1 + a+3/a^2-a+1 - a-1/a+1

Answer 1

$\frac{ - {a}^{7 } + 4 {a}^{6} + 3 {a}^{4} }{ {a}^{6} }$

$= \frac{ - {a}^{3} + 4 {a}^{2} - a + 3}{ {a}^{2} }$