Question

упростите выражение: 1/(x+3)^2:x/x^2-9 - x-9/x^2-9=
помогиитее!!!

Answer 1

1)1/(x+3)²*(x-3)(x+3)/x=(x-3)/x(x+3)
2)(x-3)/x(x+3)-(x-9)/(x-3)(x+3)=(x²-6x+9)-x²+9x)/x(x²-9)=(3x+9)/x(x²-9)=
=3(x+3)/x(x-3)(x+3)=3/x(x-3)