If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
((2/7)*x^8)/3 = 0
2/21*x^8 = 0 // : 2/21
x^8 = 0
x = 0
x = 0
| 7x-(3x+9)=8x-25 | | 3x+1+4x=22 | | 8(3+5)=2m-4 | | -2x+8=5x-6 | | n*5=-5 | | -3x+4=67 | | 4x-7=100 | | 14h-13h=5 | | 4v+11=2 | | 14mn+(6mn*6mn)-8mn-7m*7m*n+5m*5m*n= | | -5(t+9)+3t=-2t-45 | | 6000x+2/5 | | 3-7x+5x=19 | | 35=60a | | 120=-24n | | 6+5y-1/3=10 | | 5x+2=-9+7x | | 50/2+8 | | x-7=-6+3 | | 3x-(-4)=8-x | | 4(8t+1)-16=t-(t+11) | | 13-6x=3x-5 | | 52+3=50+33 | | 14h-13h= | | 109+5(9-3)=15 | | -2x+5y+50=0 | | n.5=-5 | | 105x=245x | | 3/4(2x+9)=3/8 | | -m-7=21 | | .05(x)+.10(6)=(x).06 | | 1.6r-2=.6r |