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)
15-((3*x^12)/4) = 0
(-3/4)*x^12+15 = 0
-3/4*x^12 = -15 // : -3/4
x^12 = 20
x^12 = 20 // ^ 1/12
abs(x) = 20^(1/12)
x = 20^(1/12) or x = -20^(1/12)
x in { 20^(1/12), -20^(1/12) }
| y^2-14y+14c=0 | | 79-2x=8x+16 | | 4+2n=22 | | 2(1+v)=0 | | 5v+1=46 | | 10x-165=2x-5 | | r=120(2)/26 | | 2x^2+21x+1=0 | | 2*3+4*5+6=56 | | R=120(2)/25 | | 2x^2-21x+7=0 | | (5a-2)(6a-5)= | | 5d+4d+d-9d-1=6 | | -8x+32=-24 | | 7n-4n=3n | | x+(x*.169)=10000 | | x+(x*169)=10000 | | -2x-2=17.6 | | -2x-4=17 | | 5a-9=41 | | 10n=.025 | | w/24=8 | | 3x-(4)=2x+(1) | | x+(x*1.169)=10000 | | 0.04x=20 | | 6+x=9+x-x | | 5(3-x)-4=18 | | 4.5/x=3 | | n+2-5/25-5=2n+1/5 | | 112,06=x+62,3/4 | | 12=-1/3t | | 0.3/x=1.5 |