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D( z )
z = 0
z = 0
z = 0
z in (-oo:0) U (0:+oo)
(((z^-1)/2)*z^5)/2 = 0
1/4*z^4 = 0 // : 1/4
z^4 = 0
z = 0
z in { 0}
z belongs to the empty set
| Q=4g/n | | 3=-6s+7 | | 0.6x^2=9x^2-1.7 | | 1/(4-x)+1/(2+x)=3/4 | | Ln(5)(8)= | | 4x+4x=2x+10 | | 2XY+4X=6 | | y+1.6=14.4 | | 6x(8x+7)= | | 11z=z+10z | | 65/8+27/8 | | -6/7-1/4 | | -1/2+1/3 | | 8/9-7/12 | | 6/7+3/5 | | 2+3y=6y-1/2 | | 1/5+1/10 | | 8/9+1/4t=2 | | 7*(-6)= | | 0.1(0.1x+0.7)=-0.7 | | 5x-9x-12=-4x+7-12 | | -2/5-2-7 | | 7x(-6)= | | 1/3(2x-6)=4 | | 6/5+4/5x=51/20+7/4x+3/4 | | (2v-9)(8-v)=0 | | 8=-2/x | | 2(2y-7)+20=54-8y | | 3/11=n/33 | | 11=5+2/3b | | 4+3y-3=6y+7-2y | | a-3.54=8.70 |