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)
14/x = 56/36 // - 56/36
14/x-(56/36) = 0
14/x-14/9 = 0
14*x^-1 = 14/9 // : 14
x^-1 = 1/9
-1 < 0
1/(x^1) = 1/9 // * x^1
1 = 1/9*x^1 // : 1/9
9 = x^1
x = 9
x = 9
| Z=-2xy | | 5/x=20/16 | | (2x)/(0.750-X) | | 20.532(8.784x+1021.453)=-9.963 | | (x-5)(x^2-2x-6)=0 | | 8X+10=12X-10 | | 5(3x-4)=3(5x+2) | | -9.83(329.5x+547.66)=-78.04 | | 196+100=c^2 | | 7=100x/300 | | 4r+3r=56 | | x/12=30/60 | | -3y-6=5y-18 | | x/5=99/45 | | 2*2*2*2*2*2*2*2*2*2*2*2= | | 3x-16=-76 | | 3=9x-5y | | x/.4 | | 2x-1(2x+3)=3 | | 121r^2-64+2= | | (10x+6)-(6x+3)= | | .4y=x | | Sin(4x-7)=cos(2x+13) | | 55/11-13 | | (4a+2b)(a-b)=0 | | g^2-29=323 | | 2r+10=4r | | 2x+21=7x+3 | | (64/100)(x/80) | | -p^2/12p-42=0 | | logx-log^9=3 | | -p^2+12p-42=0 |