Помогите,упростить выражение
1)x<0<br>(-4,5x-1)/(-x-4,5x²)=-(4,5x+1)/[-x(1+4,5x)=1/x 2)x≥0 (4,5x-1)/(x-4,5x²)=(4,5x-1)/[x(1-4,5x)]=-1/x