If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x-6 = 0
x-6 = 0
x-6 = 0
x-6 = 0 // + 6
x = 6
x in (-oo:6) U (6:+oo)
(3*x^2-(21*x)+11)/(x-6) = 0
(3*x^2-21*x+11)/(x-6) = 0
3*x^2-21*x+11 = 0
3*x^2-21*x+11 = 0
DELTA = (-21)^2-(3*4*11)
DELTA = 309
DELTA > 0
x = (309^(1/2)+21)/(2*3) or x = (21-309^(1/2))/(2*3)
x = (309^(1/2)+21)/6 or x = (21-309^(1/2))/6
(x-((21-309^(1/2))/6))*(x-((309^(1/2)+21)/6)) = 0
((x-((21-309^(1/2))/6))*(x-((309^(1/2)+21)/6)))/(x-6) = 0
( x-((21-309^(1/2))/6) )
x-((21-309^(1/2))/6) = 0 // + (21-309^(1/2))/6
x = (21-309^(1/2))/6
( x-((309^(1/2)+21)/6) )
x-((309^(1/2)+21)/6) = 0 // + (309^(1/2)+21)/6
x = (309^(1/2)+21)/6
x in { (21-309^(1/2))/6, (309^(1/2)+21)/6 }
| 2/3+2/15 | | 3(-5)-2y=-25 | | -50-10x=7x-18 | | x^2-6x-360=0 | | 5x+13=-11+7x | | 3/15-1/5 | | X(2)+12x+36=0 | | 3/15-1/53 | | 3n^2+12=20 | | 9x-4(3)=-3 | | (2a-1)*2+(a*2)=28 | | 2x+37=5x-5 | | (7/6x)-(6/7x) | | 73=-6(6k-7)+6(k+5) | | 3x=-y-5 | | 90x+15= | | 1/18+5/6 | | 5/4x-4=-2 | | 14+2x=16-4x | | 5/6-7/12 | | 2/3(9y+3)=4y+7 | | 2(3-3y)+5y=8 | | X^2+5x+40=0 | | 2x^2+7x+1=8x^2+9 | | .5x+-6=1 | | 4/9+1/2 | | ((8x-4)+8)/4 | | y=-80+216 | | 3y/4-2=y/2+15 | | 3x+16=14-2x | | 11/12-3/4 | | (-8)log(7)(b-1)=-24 |