If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4+4x^4=20
We move all terms to the left:
4+4x^4-(20)=0
We do not support expression: x^4
| 3x*3x/2+43=139 | | X+2x+1.5x=1 | | (5^3x)/(4^x-1)=1/125 | | 10x-10+38=12x-4 | | 2f+15.8/4=6 | | 3c-8=-12 | | 5(2w+1)/3=11 | | 4w+16-2w=12 | | a^2/2+27=35 | | 4x-2=x+38 | | 1-3(n+5)=7.6 | | 5p=2p-12 | | 2(3x+21)=24 | | x=0.10 | | 19=9e+1 | | 2f+9=17 | | 18q=57 | | (1/x)=0.009 | | 8(x-4)+8x=6(x+6)-298 | | x*0.25+2.5+x=7.5+0.75x-10 | | 2x+60=3x-30 | | 54-36=72-y | | 3x+2+x+1=5x | | (3x-5)=4x+6 | | 180n-360=4860 | | 5s=484 | | (2p+3)-(5p-2)/6p+11=22/17 | | 8=m+19 | | 6.4+1.3n=2.89 | | -w+203=152 | | 8(u-4)=-8 | | 8a+7=3a+8 |