Question

Сократить а^2 + 9/а^2 - 9

Answer 1

${a}^{2} + \frac{9}{a^{2} - 9}$

$\frac {{a}^{4} + 9 - {9a}^{2} }{ {a}^{2} }$

$\frac{ {a}^{4} - {9a}^{2} + 9 }{ {a}^{2} }$