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 = 0
x+2 = 0
x+2 = 0
x+2 = 0 // - 2
x = -2
x in (-oo:-2) U (-2:+oo)
2/(x+2)+20*x = 0
2/(x+2)+(20*x*(x+2))/(x+2) = 0
20*x*(x+2)+2 = 0
20*x^2+40*x+2 = 0
20*x^2+40*x+2 = 0
2*(10*x^2+20*x+1) = 0
10*x^2+20*x+1 = 0
DELTA = 20^2-(1*4*10)
DELTA = 360
DELTA > 0
x = (360^(1/2)-20)/(2*10) or x = (-360^(1/2)-20)/(2*10)
x = (6*10^(1/2)-20)/20 or x = (-6*10^(1/2)-20)/20
2*(x-((-6*10^(1/2)-20)/20))*(x-((6*10^(1/2)-20)/20)) = 0
(2*(x-((-6*10^(1/2)-20)/20))*(x-((6*10^(1/2)-20)/20)))/(x+2) = 0
(2*(x-((-6*10^(1/2)-20)/20))*(x-((6*10^(1/2)-20)/20)))/(x+2) = 0 // * x+2
2*(x-((-6*10^(1/2)-20)/20))*(x-((6*10^(1/2)-20)/20)) = 0
( x-((-6*10^(1/2)-20)/20) )
x-((-6*10^(1/2)-20)/20) = 0 // + (-6*10^(1/2)-20)/20
x = (-6*10^(1/2)-20)/20
( x-((6*10^(1/2)-20)/20) )
x-((6*10^(1/2)-20)/20) = 0 // + (6*10^(1/2)-20)/20
x = (6*10^(1/2)-20)/20
x in { (-6*10^(1/2)-20)/20, (6*10^(1/2)-20)/20 }
| 2f^2-3=0 | | 12q-4-9q=6+4q | | 0.8*x=0.25*x+6 | | 2(x+5)=(x-4) | | -4v-(7-v)=4-2v | | 6+n^4=60 | | 5v+23=2(v+4) | | y=-.22x+5 | | 12/32 | | 4x-18=0 | | 16x^1+x+1=0 | | y=-.22222222x+5 | | 0.75h+3=0.25h-5 | | 6x+9=86+x | | 9(w-7)=-3w-3 | | 201=50.24h | | 16=X+13 | | 10x-4+10x-4+5x+8+5x+8=360 | | y=-.22222222x-5 | | 3h^2-6=0 | | 3.4-0.6c=0.4c-5.9 | | -17=8(v+2)+3v | | 3y+3(y-7)=33 | | (3y+4)(2y/62+5y-36) | | 5(10x-10)=-5x(-4x+14) | | 8g^2-6g+1=0 | | 4s*5t= | | 15=12a-21 | | 2y+-18=-18 | | 8g^2-6g+2=0 | | 1/2*26*28 | | -3v+12v+6=7v+30 |