If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
a*(((-a)^2+18*a+9)/3) = 0
(a*(a^2+18*a+9))/3 = 0
a^2+18*a+9 = 0
a^2+18*a+9 = 0
DELTA = 18^2-(1*4*9)
DELTA = 288
DELTA > 0
a = (288^(1/2)-18)/(1*2) or a = (-288^(1/2)-18)/(1*2)
a = (12*2^(1/2)-18)/2 or a = (-12*2^(1/2)-18)/2
(a-((-12*2^(1/2)-18)/2))*(a-((12*2^(1/2)-18)/2)) = 0
(a*(a-((-12*2^(1/2)-18)/2))*(a-((12*2^(1/2)-18)/2)))/3 = 0
( a-((-12*2^(1/2)-18)/2) )
a-((-12*2^(1/2)-18)/2) = 0 // + (-12*2^(1/2)-18)/2
a = (-12*2^(1/2)-18)/2
( a-((12*2^(1/2)-18)/2) )
a-((12*2^(1/2)-18)/2) = 0 // + (12*2^(1/2)-18)/2
a = (12*2^(1/2)-18)/2
( a )
a = 0
a in { (-12*2^(1/2)-18)/2, (12*2^(1/2)-18)/2, 0 }
| (2x^2+16x+25)/(x+5) | | K+18=115 | | 5(5y-1)+21=3(4y+1)-23 | | 2x*2x+9x+18=0 | | 6(x-12)-2=16x-134 | | 9x*9x+21x+61=0 | | (1/x-5)+(2x/5-x)-1 | | 6(4x-x)=12-36 | | Ln(6x)=5 | | 5x-4=5x-5 | | 6a-19=-6a+-19+36 | | ln(4x-5x)=0 | | 5xsquare+10x+20=0 | | 5xsquare+9x+18=0 | | -10a^2-4a=0 | | 7x+12y= | | (x^3-3x^2-3x-4)/(x+2) | | 7(2)+12(3)= | | 6-y=9y-9y | | -6x=-24+2x | | 400-80x+40y=0 | | 4p-21=-37+6p | | p=c+2b+3b | | Y=4*4-8 | | 8y+6=9y+0 | | 8b+8b-16=34 | | 4n+11-7n=(-13) | | -10(-10+8y)=60 | | 4y/y^2-10y+21-1/y-3 | | 5x=5-25(1.5x-3) | | 4x^3+2.4x^2+.36x+.00002=0 | | (4x+5)(3y+2x)= |