Question

помогите,упростить выражение

Answer 1

1)x<0
(-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