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D( a )
a = 0
a = 0
a = 0
a in (-oo:0) U (0:+oo)
3^(7/a) = 0
a należy do O
a belongs to the empty set
| 7(3x+4)=56 | | 5(a-2)=45 | | -2c+9=-19 | | g^2+22g-3=0 | | 3^(a/7) | | 12.99=0.5X | | x+3y=147 | | p^2+16p=41 | | p^2+16p=4 | | 15v^2+25v-60=0 | | x+19+x-14=x+51 | | f^2+2f-43=0 | | 4(x+5)=2(x+25) | | k^2+12k-19=0 | | 2x+6y+4-y-9x-6= | | -4(-6x+2)=-128 | | s+53=g | | Y=1/0.75 | | u-31+u-31=u | | s+53= | | -102=6(-3x-2) | | -2+2=-4+12x | | x-6x+8x-5x= | | n-5n+1=15 | | j^2-26j=17 | | 7x-(5x+6)+(x-2)=3x-8 | | x^2+8x-43=0 | | s-2+s+14=s+48 | | 0.5x+2=x+8 | | 6x-1/2=3 | | -4(5x-8)=-48 | | s-2+s+14+x=s+48 |