1)x/(x-2)-7/(x+2)=8/(x-2)(x+2)
x≠20 x≠-2
x(x+2)-7(x-2)=8
x²+2x-7x+14-8=0
x²-5x+6=0
x1+x2=5 U x1*x2=6
x1=2 не удов усл
x2=3
2)4/(x-3)(x+3) -(x+1)/(x-3)=1
x≠3 x≠-3
4-(x+1)(x+3)=x²-9
x²-9-4+x²-3x-x-3=0
2x²+4x-10=0
x²+2x-5=0
D=4+20=24
x1=(-2-2√6)/2=-1-√6
x2=-1+√6