1)5х^17÷х^13-16х^4 при х=-1
5х^17÷х^13-16х^4=5х^4 -16х^4= -11х^4 = -11*(-1)^4 = -11.
2)-33у^6÷у^4+37у^2 при у=0,5
-33у^6÷у^4+37у^2= -33у^2 +37у^2 =4у^2= 4(0,5)^2= 4*0,25= 1.
3) 15z^9:z^6-160z^3 при z=-0,5
15z^9:z^6-160z^3= 15z^3-160z^3= -145z^3= -145*(- 0,5)^3= 145*0,125= =18,125.