If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( z )
z^-4 = 0
(4*z^5)/(z^-4) = 0
z = 0
z^-4 = 0
z^-4 = 0
1*z^-4 = 0 // : 1
z^-4 = 0
z należy do O
(4*z^5)/(z^-4) = 0
(4*z^5)/(z^-4) = 0
4*z^9 = 0 // : 4
z^9 = 0
z = 0
z = 0
z = 0
z in (-oo:0) U (0:+oo)
((4*z^5)/(z^-4))^-2 = 0
1/16*z^-18 = 0 // : 1/16
z^-18 = 0
z należy do O
z belongs to the empty set
| F(x)=3x^3-10x^2-288x-27 | | x+4x+(3x+20)=180 | | x-2(-5)=7 | | 25(68)-7x=800 | | 12y-2=16-9y-3 | | 2x^2-2=12 | | 25(77)-x=170 | | 25(77)-7x=800 | | 1+4*(-5)-2= | | 7x^2-60x+32= | | 17/4n | | 2(4)+3(1.333)=12 | | 2-x+3=28+7 | | 2(4)+3(1.33)=12 | | 2(4)+3y=12 | | x-2(5)=7 | | 10q-3r=14 | | 3a-6x+4-2a+5x= | | 11=2y+7 | | 11+4(7-6x)=3-18x | | -2(4s-5)-10=-2(6s+4)-3 | | 291=124-v | | -u+44=215 | | 24=196-u | | (1/2)^(x/30) | | 3y^3(5y+3)(y-2)= | | 7+3(-5)= | | 8u=10.24 | | 3(-15-8)= | | 4m+9m= | | 5+6(-5)= | | 6w=7.68 |