If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( b )
4*b-8 = 0
4*b-8 = 0
4*b-8 = 0
4*b-8 = 0 // + 8
4*b = 8 // : 4
b = 8/4
b = 2
b in (-oo:2) U (2:+oo)
(3*b-6)/(4*b-8) = 0
3*b-6 = 0 // + 6
3*b = 6 // : 3
b = 6/3
b = 2
b in { 2}
b belongs to the empty set
| p^2-6p-1=0 | | A(x)=-x^2+50x | | 3n/5=81 | | X=90-5x | | 2z^2+8z-330=0 | | 3x-4(2-x)=2x+1 | | 6(x-0.33)=-2(x+23) | | 9+5m=3(-5+m)+7 | | X=180-5x | | 5(x+2)+3(4-x)= | | ln(x+5)+lnx=14 | | z+16z+21=-39 | | 6x^2+30=-4 | | x+15100-20100=x-6.96 | | 8x^2-6=10 | | 36-10u=-44 | | 4j+3k-2j-k= | | 20y-4(y-7)=30 | | e/-9-5=11 | | 30=-5w+3(w-8) | | (4y^2)-(2-y^2)=11 | | 0.20x+5=19-0.5x | | 3(6x)=12 | | x+(90+x)=1 | | 25+x+15+3x-10=180 | | -8x^2+40x+48=0 | | 0.75(x+8)=0.33(x+27) | | 4=2p+-2 | | ln(x^4-24x^2)-ln(x^2)=0 | | 35=8w-w | | 3/4-6x15 | | -3x-7x^5=-5 |