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)
((3*x^-4)/4)*x^-3 = 0
3/4*x^-7 = 0 // : 3/4
x^-7 = 0
x naleu017Cy do O
x belongs to the empty set
| x+3/2=29-2x | | 5x+8x-9=4x+10+8x | | 62-2x=8-9x | | 1100=7v^2+300 | | 900=7v^2+300 | | 5x/4-4/3=2x/5 | | 700=7v^2+300 | | 100=7v^2+300 | | 200=7v^2+300 | | 300=7v^2+300 | | 400=7v^2+300 | | 500=7v^2+300 | | x+(x*0.05)=12 | | 600=7v^2+300 | | 800=7v^2+300 | | 1000=7v^2+300 | | 3x+6-7x=6 | | 1/2y_6=1/9y | | 5(2x-3)=4(x+1) | | -9/10+2/5 | | 2x+7x-23=5x+9 | | 2(5c+2)-2=3(2c+3)+7 | | 6-2x+3x=13 | | 8x-2+6x+6= | | 7x^2+6-2x=0 | | 12x+58=9x+13 | | -1/4x=2 | | s+r=a+b | | 9y+4=7-3y | | 3(2y+5)=4y+21 | | 3xy^7+19-xy^2=196 | | 4d+3d+d=3d+15 |