1) a^4(a^5+1)/(a^5+1)= a^4;
при а=-1/3; а^4=(-1/3)=1/81;
2) 3(m^3-16)/3(m-2)= (m^3-16)/(m-2);
при m=-4; (-64-16)/(-4-2)= -80/-6=40/3= 13 1/3;
3) b^3(b^9+1)/(b^9+1)= b^3;
при b=-0,5; (-0,5)^3= -0,125;
4) (2m-1)^2/2(2m-1)= (2m-1)/2;
при m=6; (12-1)/2=11/2=5 1/2=5,5.