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+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 = (-9^(1/2)-3)/(1*2)
x = 0 or x = -3
x in (-oo:-3) U (-3:0) U (0:+oo)
(5*x^4+14*x^3+9*x)/(x^2+3*x) = 0
5*x^4+14*x^3+9*x = 0
x*(5*x^3+14*x^2+9) = 0
5*x^3+14*x^2+9 = 0
{ 1, -1, 3, -3, 9, -9 }
1
x = 1
5*x^3+14*x^2+9 = 28
1
-1
x = -1
5*x^3+14*x^2+9 = 18
-1
3
x = 3
5*x^3+14*x^2+9 = 270
3
-3
x = -3
5*x^3+14*x^2+9 = 0
-3
x+3
5*x^2-x+3
5*x^3+14*x^2+9
x+3
-5*x^3-15*x^2
9-x^2
x^2+3*x
3*x+9
-3*x-9
0
5*x^2-x+3 = 0
DELTA = (-1)^2-(3*4*5)
DELTA = -59
DELTA < 0
x in { -3}
x*(x+3) = 0
x^2+3*x = 0
x*(x+3) = 0
x+3 = 0 // - 3
x = -3
x*(x+3) = 0
(x*(x+3))/(x*(x+3)) = 0
( x+3 )
x+3 = 0 // - 3
x = -3
( x )
x = 0
x in { -3}
x in { 0}
x belongs to the empty set
| 30+15x=50 | | (15x^2)*(2x^2-1)= | | -22=8(y-4)-3y | | 16=.5m-8 | | 1/2(1-2x)=3-x | | 50x+30=15.00 | | 1.2+0.45m=0.85+0.5m | | 1.2+0.45=0.85+0.5 | | x/17+675=299 | | -2u+5(u+6)=36 | | 3x-1/(x+3)(x+1) | | 5y+2x=-17 | | 7-6v=5-8v | | sqrt(x+1)+sqrt(10-x)=sqrt(2x-7) | | 1/2(2x-1)=3-x | | 2-b=ac+3b | | -3(c-24)=-3c-24 | | 500-5m=1200 | | 5x*6y=87 | | 59=w-16-4w | | 400+6l=800-6l | | x/-4=-20 | | x/4-23=-10 | | -2m+9=-11m | | n+(-29)=0 | | 2g+3(-4+2g)=1-g | | 5xy-4=z+6 | | 4*x=7 | | -1+2k=4k-10-5k | | 4(m-3)-(m-5)=-52 | | 3y+7x=1 | | 4-6v=-5-8v |