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 = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2*x+2/x-6+4 = 0
2*x^1+2*x^-1-2*x^0 = 0
(2*x^2-2*x^1+2*x^0)/(x^1) = 0 // * x^2
x^1*(2*x^2-2*x^1+2*x^0) = 0
x^1
2*x^2-2*x+2 = 0
2*x^2-2*x+2 = 0
DELTA = (-2)^2-(2*2*4)
DELTA = -12
DELTA < 0
x in { }
x belongs to the empty set
| -13y=-3 | | 1.5=15/x | | 6x+7=2x+56 | | 11-v/2=9 | | 4x-[3x+11]=11 | | 13z-8z=17+13z | | -1/3(3y+2) | | 2.5=((2x)^2)/((1-2x)^2) | | 2x-1/4 | | 16/0.5=p/4 | | 3x+20=4x+12 | | 55=3[2x-1]+2[x+5] | | y=-19+2x | | 5(-2x-4y)-4(7y-x)= | | 8x(.75y)= | | x^2-92x-9+92x-9=x^2 | | 6x+4-=8 | | -3x+1=2x+7 | | (x-2)*5=30 | | 5=4y+13 | | 5/6x-3.7=1117/20 | | -1-5x=1-3x | | 8(1+5x)-7(1+7x)=-44 | | 7-3r=r-4(2+r)+r | | 600x=800x-600 | | -18x-6y=54 | | 8[c-9]=6[2c-12]-4c | | x-2*5=30 | | 3(9)-8=22 | | 1/3=-7*n | | 5+2(n+1)=12n-24 | | (t+3)/2=7 |