1)lim(x-3)(x+3)/(x-3)(x+1)=lim(x+3)/(x+1)=6/4=1,5
2)lim(√x-1)(√x+1)/(√x-1)=lim(√x+1)=1+1=2
3)limx(3/x -2)/x(1+1/x)=lim(3/x -2)/(1+1/x)=(0-2)/(1+0)=-2
4)limx²(3+1/x²)/x²(2-3/x²)=lim(3+1/x²)/(2-3/x²)=(3+0)/(2-0)=1,5
5)limx(3+5/x)/x(4+1/x)=lim(3+5/x)/(4+1/x)=(3+0)/(4+0)=0,75
6)limx²(1/x+1)/x²(3/x+2)=lim(1/x+1)/(3/x+2)=(0+1)/(0+2)=0,5
7)lim(x-3)/(x-3)²=lim1/(x-3)=∞
8)limx³(2+3/x)/2x³=lim(2+3/x)/2=(2+0)/2=1