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+1/x = 0
2*x^1+1*x^-1 = 0
(2*x^2+1*x^0)/(x^1) = 0 // * x^2
x^1*(2*x^2+1*x^0) = 0
x^1
2*x^2+1 = 0
2*x^2+1 = 0
DELTA = 0^2-(1*2*4)
DELTA = -8
DELTA < 0
x in { }
x belongs to the empty set
| -9z+7z=9z+7-6z | | 2y+x=100 | | 1x+1x+1+1x+2=39 | | (3/4)k-5=(1/4)k-1 | | 3(5x+6)=-39+27 | | 10+(-2)(1.8)=y | | 2-10=2y | | 6c=24 | | 1/2(x+8)+3/2x=2 | | 2x+17=5x+32 | | 3x-(-2x+10)+1=0 | | [-6+8]=a | | 9z-z=-3+3z-2-10 | | 2x-4=49 | | 0-10=2y | | ax=2x+1 | | 3/2h=-4 | | 42x^2-24x=0 | | -1/4k=-2.5 | | -1-10=2y | | 9x^5-61x^4-61x^3+9=0 | | -22-7= | | (10/3)/(-1/6) | | -12=-3/2k | | 18+b=-1 | | 10/3/-1/6 | | -(10/3)b=5 | | 3x+2(y-1)=4(y+2)-(y+5) | | -11+a=-9 | | -5(f+7)=3(f-1) | | 27X/958.74 | | (7/10)m=10 |