If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x-9x^4=12
We move all terms to the left:
x-9x^4-(12)=0
We do not support expression: x^4
| (x+1/x-1)^8=1 | | X+2=(2(x-1)/3 | | X+2=(2(x-1)÷3 | | -4w+48=7(w-1) | | 20y^2-y-32=0 | | -9(u-2)=-4u+33 | | -7u-37=-2(u+1) | | 52=32-5m | | 6(15x+10)–29–(x-32)=7(11x+11) | | -(7x-3)+5x-7=-4 | | 3x-7÷4=2x+3÷3+1 | | -3(6p+4)-2(5-14p)=3(8+3p) | | b-2(b-2(1-b))=14 | | 5b+3=26-4 | | 10/13x+1/4=3/7-3/13x+3/7 | | -2|-10+2n|=-44 | | 45/x=-9 | | 3x^2=2x^2+64 | | 2x+12=6x+2 | | 4(x-4)=17 | | 7x−9=2x−4 | | 4x+6=7x+6 | | 2(4u-7)=16 | | 7b-5=-58 | | -10=v/9-5 | | 6u+8=-52 | | -8+2w=2 | | |4+10m|=84 | | t/2+5=2 | | 2(-1+y)+3y=-12 | | 4x4-73x2+144=0 | | X-4(-17+5x)=11 |