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-3 = 0
x^2-9 = 0
x-3 = 0
x-3 = 0
x-3 = 0 // + 3
x = 3
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 (-3:3) U (3:+oo)
5/(x-3)+1 = 30/(x^2-9) // - 30/(x^2-9)
5/(x-3)-(30/(x^2-9))+1 = 0
5/(x-3)-30*(x^2-9)^-1+1 = 0
5/(x-3)-30/(x^2-9)+1 = 0
(5*(x^2-9))/((x-3)*(x^2-9))+(-30*(x-3))/((x-3)*(x^2-9))+(1*(x-3)*(x^2-9))/((x-3)*(x^2-9)) = 0
5*(x^2-9)-30*(x-3)+1*(x-3)*(x^2-9) = 0
x^3+5*x^2-3*x^2-30*x-9*x+27+45 = 0
x^3+2*x^2-39*x+72 = 0
x^3+2*x^2-39*x+72 = 0
x^3+2*x^2-39*x+72 = 0
{ 1, -1, 2, -2, 3, -3, 4, -4, 6, -6, 8, -8, 9, -9, 12, -12, 18, -18, 24, -24, 36, -36, 72, -72 }
1
x = 1
x^3+2*x^2-39*x+72 = 36
1
-1
x = -1
x^3+2*x^2-39*x+72 = 112
-1
2
x = 2
x^3+2*x^2-39*x+72 = 10
2
-2
x = -2
x^3+2*x^2-39*x+72 = 150
-2
3
x = 3
x^3+2*x^2-39*x+72 = 0
3
x-3
x^2+5*x-24
x^3+2*x^2-39*x+72
x-3
3*x^2-x^3
5*x^2-39*x+72
15*x-5*x^2
72-24*x
24*x-72
0
x^2+5*x-24 = 0
DELTA = 5^2-(-24*1*4)
DELTA = 121
DELTA > 0
x = (121^(1/2)-5)/(1*2) or x = (-121^(1/2)-5)/(1*2)
x = 3 or x = -8
x in { -8, 3, 3}
(x+8)*(x-3)^2 = 0
((x+8)*(x-3)^2)/((x-3)*(x^2-9)) = 0
((x+8)*(x-3)^2)/((x-3)*(x^2-9)) = 0 // * (x-3)*(x^2-9)
(x+8)*(x-3)^2 = 0
( x+8 )
x+8 = 0 // - 8
x = -8
( x-3 )
x-3 = 0 // + 3
x = 3
x in { 3}
x = -8
| 25w^2+70w+49=0 | | 4.8q-5.6-4.1q=-.3q-2.5 | | 14(4c+8)=3c-8 | | t(t+2)=80 | | 103/16-7/16 | | p^2=49p | | 0=-20+37t-16t^2 | | 8y+2y+3y= | | 9h^3=h | | 9h^3=9 | | w(w-2)=80 | | 9m+9m= | | 13d*0= | | 3*(4a)= | | 9y+6=7y | | 9+(12+c)= | | 2(x^(2/3))+3(x^(1/3))-2=0 | | 3(2z-4)=5(z/4) | | 24+(x+6)= | | 2[3-3(x+1)]=2(-9-x)+2x+9 | | 3b^2+17+24=0 | | 60-3y=42 | | 9y+6= | | 56b^2-19bs-15s^2=0 | | -5(-6y)= | | 4x-10-6x=6x+4 | | x-x*.1=37800 | | 1/5(10x-25)=1/2(10x-4) | | 10b^2-4b-6=0 | | 56r^2+121+63=0 | | 5x-9x-2=0 | | 52869=4 |