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^2-(3*x) = 0
x^2-9 = 0
x^2-(3*x) = 0
x^2-(3*x) = 0
x^2-3*x = 0
x^2-3*x = 0
DELTA = (-3)^2-(0*1*4)
DELTA = 9
DELTA > 0
x = (9^(1/2)+3)/(1*2) or x = (3-9^(1/2))/(1*2)
x = 3 or x = 0
x^2-9 = 0
x^2-9 = 0
1*x^2 = 9 // : 1
x^2 = 9
x^2 = 9 // ^ 1/2
abs(x) = 3
x = 3 or x = -3
x in (-oo:-3) U (-3:0) U (0:3) U (3:+oo)
6/(x^2-(3*x))-(1/(x^2-9)) = 0
6/(x^2-3*x)-(x^2-9)^-1 = 0
6/(x^2-3*x)-1/(x^2-9) = 0
x^2-3*x = 0
x^2-3*x = 0
x*(x-3) = 0
x-3 = 0 // + 3
x = 3
x*(x-3) = 0
6/(x*(x-3))-1/(x^2-9) = 0
(6*(x^2-9))/(x*(x-3)*(x^2-9))+(-1*x*(x-3))/(x*(x-3)*(x^2-9)) = 0
6*(x^2-9)-1*x*(x-3) = 0
5*x^2+3*x-54 = 0
5*x^2+3*x-54 = 0
5*x^2+3*x-54 = 0
DELTA = 3^2-(-54*4*5)
DELTA = 1089
DELTA > 0
x = (1089^(1/2)-3)/(2*5) or x = (-1089^(1/2)-3)/(2*5)
x = 3 or x = -18/5
(x+18/5)*(x-3) = 0
((x+18/5)*(x-3))/(x*(x-3)*(x^2-9)) = 0
((x+18/5)*(x-3))/(x*(x-3)*(x^2-9)) = 0 // * x*(x-3)*(x^2-9)
(x+18/5)*(x-3) = 0
( x+18/5 )
x+18/5 = 0 // - 18/5
x = -18/5
( x-3 )
x-3 = 0 // + 3
x = 3
x in { 3}
x = -18/5
| -x+19x+-9x=-9 | | -4(k-1)=-8(1-k) | | 0=4-3(x) | | -13+8x=11+7x | | -3+14=16x-4-15x | | (w+1)+(4w+3)= | | -x/7=48/7-2x-5 | | (6-l)+(3m)i=-12i+27i | | -(x/7)=29/56-3/8 | | 12p=72+0.125p | | r-15=8 | | 8/11(n-10=64 | | xy^6/y^4x | | -8j+2=-14 | | 2x-12=7x+5 | | 16x^2+18=0 | | 5(4+4x)=4(7x-5) | | -2v^2+9v+5=0 | | 4x(1/3-1/2)/5/9 | | x/4-x/5=9/4 | | 1.7(3h-4)=3.5(2h-6) | | x/11=x/12-9 | | -2v^2+9v+5=o | | AX+2X=B | | x-10+3x+5+25=180 | | 2x+=20 | | 7x^2+17x-9=0 | | x-10+3x-5+25=180 | | 8k-20= | | 15j-16j=-20 | | 11800=p+p(.03)(6) | | 4cx-5c=-12+d |