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)
4/x-(x/6)-(5/3) = 0
4/x-(x/6)-5/3 = 0
4*x^-1-1/6*x^1-5/3*x^0 = 0
(4*x^0-1/6*x^2-5/3*x^1)/(x^1) = 0 // * x^2
x^1*(4*x^0-1/6*x^2-5/3*x^1) = 0
x^1
(-1/6)*x^2+(-5/3)*x+4 = 0
(-1/6)*x^2+(-5/3)*x+4 = 0
DELTA = (-5/3)^2-(4*4*(-1/6))
DELTA = 49/9
DELTA > 0
x = ((49/9)^(1/2)-(-5/3))/(2*(-1/6)) or x = (-(-5/3)-(49/9)^(1/2))/(2*(-1/6))
x = -12 or x = 2
x in { -12, 2}
x in { -12, 2 }
| z+13=-20 | | 3x+65+x+x=180 | | 1.5y+x=4 | | P-2a=b | | 16z=0.4z | | 7/4n-1=4/2n-5 | | A^2=-5-6a | | 5x+1-(4/x)=0 | | -8u-9=-4u-5 | | 2m/7+3m/14=4 | | 2/3c=10 | | 8-6(-z-5)=4(4z+1)+7 | | 6(x-9)+8=-46 | | -8(m+1)-m-9=-9(m+5)+28 | | z+6.2z+6.3=-4.5(z+6.4) | | 7-x^2-12x=0 | | (-a-3b+2)5ab= | | k+14=-6 | | 8+5t=6 | | 6(x-5)+5x=-3(x+10)+14x | | 1/2(16z+12)-1=7(z-4) | | 11(v+1)-2v=3(3v+1)-4 | | Y=-2/315x^2+4x | | 3p+2=7 | | 7a-2/3=4 | | -6y+48=3(4y-8) | | 5y-10=4-3y | | V^2=-3-4v | | 10=r/3+8 | | -11p-6(5-3p)=4(p-3)-6 | | 0.7-4y=1.74 | | 5m-3m+1=m-7 |