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-3 = 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-3 = 0
x-3 = 0
x-3 = 0 // + 3
x = 3
x in (-oo:0) U (0:3) U (3:+oo)
x/(x-3) = 9/(x^2-(3*x)) // - 9/(x^2-(3*x))
x/(x-3)-(9/(x^2-(3*x))) = 0
x/(x-3)-9*(x^2-3*x)^-1 = 0
x/(x-3)-9/(x^2-3*x) = 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
x/(x-3)-9/(x*(x-3)) = 0
(x^2)/(x*(x-3))-9/(x*(x-3)) = 0
x^2-9 = 0
(x^2-9)/(x*(x-3)) = 0
(x^2-9)/(x*(x-3)) = 0 // * x*(x-3)
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 { 3}
x = -3
| (25)(.06)+(75)(.04)= | | 4x+3(-3x-1)-3=2 | | 2x+9=59 | | x=2x+11 | | t=-216-40t | | 3x+4=20-5x | | x^2+8=-6x | | X/10+6=18 | | (5x-3)/x=(7-x)/(x+2) | | 6(3x-4)=4(4x+5) | | m^2-7=6m | | -2x-25=(2x+11) | | X/5+1=11 | | b^2+8=9b | | (5x-3)/x=(7-x)/x+2 | | X/4+3=10 | | -12x+6(4)=30 | | 9+(a+b)= | | B^2=64 | | 6x=117-7x | | 27x+343=0 | | 4v-8=8-8 | | 5(3x+2)+2(3x-4)=100 | | -2x+7=(-2x+2) | | 119-5x=22x+17 | | W(w-1)(3w+4)= | | 7x-10=13x+4-6x | | x/8+3=-24-5x | | 7(2x-3)+4x=160 | | x=(2xy) | | 9x=160-7x | | x+3x=91 |