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 in (0:+oo)
ln(x) = -2/5 // + -2/5
ln(x)-(-2/5) = 0
ln(x)+2/5 = 0
ln(x)+2/5 = 0 // - 2/5
ln(x) = -2/5
ln(x) = ln(e^(-2/5))
x = e^(-2/5)
| 7x-2=-x+22 | | -8+3x=-16+25 | | T(x)=X^2+5 | | 4-(3-5)= | | K(x)=2x^2-12 | | 2-2h=3h+17 | | 10x+32y=-62 | | 4.5+t=30 | | 4.4+t=30 | | Q-4-3=-2 | | -2x=-(x-6) | | w=10.5 | | 1.6x+1.2y=500 | | a+10/9=4 | | 10t=230 | | IX+3I=16 | | 3/4r1 | | 1/4(32)=8 | | -1/3x=-1/11 | | 4(x)-2(x)=12 | | 3n^4*6n^9= | | 3e^2x+5=1000 | | -15=3(2x+9) | | 5-12/3= | | 5(4x-3)=30 | | 5x+46=9+14 | | 9+x(6)=10x | | -2(x+4)+3=6(x+2)+5 | | 9+4(-3+2m)= | | 5+46=9+14 | | X-3/4=-9 | | 7(2)+12=2(4(2)-5) |