2)(3x-5)(x+3)=(20+4x)(x-3)
3x²+9x-5x-15-20x+60-4x²+12x=0
-x²-4x+25=0
x²+4x-25=0
D=16+100=116 √D=2√√29
x1=(-4-2√29)/2=-2-√29
x2=-2+√29
3)y(y²-12y+32)/(y-4)(y+5)=y(y-4)(y-8)/(y-4)(y+5)=(Y-8)/(y+5)=0
y-8=0
y=8
4)6/x(x-4) -1/(x-4) =16/x(x-4)(x+4) x≠0, x≠4, x≠-4
6(x+4)-x(x+4)=16
6x+24-x²-4x-16=0
x²-2x-8=0
x1+x2=2 U x1*x2=-8⇒x1=-2 U x2=4- yt eljd eck