Question

Помогите пожалуйста!!!

Answer 1

$\displaystyle\bf\\\frac{6-a}{a^{2} } -\frac{a+4}{a} +3=\frac{6-a-a^{2} -4a+3a^{2} }{a^{2} } =\frac{2a^{2} -5a+6}{a^{2} }$

$\displaystyle\bf\\Otvet \ : \ \frac{2a^{2} -5a+6}{a^{2} }$