y'=((2x-3)'*(3x+2)-(3x+2)'(2x-3))/(3x+2)^2=6x+4-6x+9/(3x+2)^2=13/(3x+2)^2. y'=0, 13/(3x+2)^2=0, 3x+2 не = 0, x не = -2/3.
ответ:-2/3.
y'=((2x-3)'*(3x+2)-(3x+2)'(2x-3))/(3x+2)^2=6x+4-6x+9/(3x+2)^2=13/(3x+2)^2. y'=0, 13/(3x+2)^2=0, 3x+2 не = 0, x не = -2/3.
ответ:-2/3.