(4х-3)/(3-2х) - (4+5х)/(3+2х) - (3+х-10x^2)/(4x^2-9)

Общий знаменатель 1. (4x-3)(3+2x)-(4+5x)(3-2x)/(3-2x)(3+2x)= (12x+8х²-9-6x)-(12-8x+15x-10х²))/(3-2x)(3+2x)=(6x+8х²-9-12-7x+10х²)/(3-2x)(3+2x)= =(18х²-x-21)/(3-2x)(3+2x) = 2. (18х²-x-21+3+x-10х²)/(3-2x)(3+2x)= =(8х²-18)/(3-2x)(3+2x)= =2(4х²-9)/-(4х²-9)= = -2