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)
((71/5)*x^21)/6 = 0
71/30*x^21 = 0 // : 71/30
x^21 = 0
x = 0
x = 0
| 2/3-2/9-1/6= | | 30=.8Tsquared | | 4(1x-9)=6+12X | | 4x+x=95 | | 9x+7=-6x+52 | | x^2=-10x+3 | | 2x^2-12x+23=7 | | -15V^2=7V+2 | | (10x)^-5/4 | | -15v^2+7V+2=0 | | x^2+.16x+-.92=0 | | 5f+12=3f+18 | | y=(8x^2+5x+7)(6x+1) | | 2-10x+24g(x)=x-4 | | (74-4x)+(9x+15)+(3x-5)=180 | | y=ln(x+2) | | 12x-18=6x-4 | | 5cosx+3=-cosx | | 2x^3+4x^2-39x-45=0 | | -12=x^2-8x | | 1/2(x^2-x-1)=0 | | 3(4z-3)-3(3-2z)=3 | | (x-9)+(4x+48)+(4x-12)=180 | | 10+6X=-32 | | 0=12x^2+24x+6 | | M^2+14m-81=0 | | y=6x^2+7x-19 | | 6-2x=5x-9 | | (57-3x)+(8x+23)+5x=180 | | 4q^2-4q=3q^2-6q+35 | | (12+x)(14+x)=255 | | y=12x^2+24x+6 |