X/(x+1) + X/(x-3)=x /дробь

x≠-1 U x≠3x(x-3)+x(x+1)=x(x-3)(x+1)x(x-3+x+1)-x(x²+x-3x-3)=0x(2x-2-x²+2x+3)=0x(x²-4x-1)=0x=0x²-4x-1=0D=16+4=20x1=(4-2√5)/2=2-√5x2=2+√5