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^4 = 0
x^5 = 0
x^4 = 0
x^4 = 0
1*x^4 = 0 // : 1
x^4 = 0
x = 0
x^5 = 0
x^5 = 0
1*x^5 = 0 // : 1
x^5 = 0
x = 0
x in (-oo:0) U (0:+oo)
-3/(x^4) = -4/(x^5) // + -4/(x^5)
-3/(x^4)-(-4/(x^5)) = 0
4*x^-5-3/(x^4) = 0
4*x^-5-3*x^-4 = 0
(4*x^0-3*x^1)/(x^5) = 0 // * x^10
x^5*(4*x^0-3*x^1) = 0
x^5
4-3*x = 0
-3*x^1 = -4 // : -3
x^1 = 4/3
x = 4/3
x in { 4/3}
x = 4/3
| 48.5=2.49+x | | 3x+32+90=180 | | x+20+x+x+70= | | 3(2x-9)-4=3(x-4)+8 | | 3z+4=3z-1 | | 54+(x-2)+(180-2x)=180 | | (j*j)-9jk-10*k(k)=0 | | 1/2x=1/3x=5 | | -210+6x=6 | | 7x-9*2=5x | | (180-2x)+54+(x-2)=180 | | -8x^12-14x^8/-2x^4 | | 5-.5x=0.625x+2 | | .20(180)+8= | | 25p+10(1-p)=5p+15(1-p) | | x^2+6y+2x+14=0 | | (180-2x)+54+(x+2)=360 | | 2k-6/4= | | Sin(y)=0 | | 4(2x-6)-2=4(x-3)+10 | | x-34=-6x+78 | | 9x-2(2x-7)+4(3-5x)= | | (180-2x)+54+(x+2)=180 | | (27a^-3/8b^6)^-1/3 | | 6y-7=10y+5 | | x^8+x^4-240=0 | | 8x-(2x+11)=37 | | 1 + 7 g= 80 | | 3=2y-9 | | -7+m=-41 | | x+5(-0.6666666666x+4)=20 | | 17 = 5 + j |