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D( b )
b = 0
b = 0
b = 0
b in (-oo:0) U (0:+oo)
(2*b^2)/b = 0
2*b = 0 // : 2
b = 0
b in { 0}
b belongs to the empty set
| 2m-6m+4n+7m-5n= | | 3a+4b-16=0 | | (2x-5)/3=x/4 | | -(x+15)=4x+5 | | 2g+3h-5h-g= | | 3x^2-6*2x-9=0 | | (an)=3(an-1)+(n) | | 5(6a-1)=365 | | 3(f-6)=-6 | | 23=4j-1 | | y=-0.2x+200 | | n+1=3an+1 | | -10(s+3)=17 | | 7e-3f+3e-4f= | | x-0.2x=19800 | | x*3+4=22 | | 6x/2=18x/4 | | (an)-3(an-1)=n | | an=3an-1+n | | an-(3an-1)=n | | x^2-y^2=57 | | 2=5x^2-10x | | 2=5x^2-10 | | an-3an-1=n | | 4a-24=56 | | 5x^3*(2x^4)^2/4x^3 | | 6c-4d-2c+9d= | | 2x-x^2=x | | 500/x=100 | | x+(x+60)=360 | | 100=500/x | | Q=456-0.85P |