If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X^4-6X^2=2X^2-16
We move all terms to the left:
X^4-6X^2-(2X^2-16)=0
We do not support eXpression: X^4
| 5=-x+6x | | 5x^=7+3x | | 4n^2-16n+24=9 | | 1.24r=-5 | | |x|=35.8 | | 16f-14=9f-10 | | -4=4+3b+4 | | x^2+35x-564=0 | | 1/4v=-7 | | 2/7d=3d-45/7 | | 16f-16=9f-7 | | 14v=-7 | | -2.66(8x-1.66)=86.22 | | -12=-2b-4b | | 1/6x+3/4x–3=4 | | 1/8t+3/t–3=4 | | -18=x+2x | | X+49x=12 | | -90=1+7(1+2v) | | 20x2=980 | | 11=-5n-6n | | (4x+19)1/2+4=x | | 4+5x-4x=4 | | 3(y-1)=9y+1-2(-5y-7) | | 246=-6(6b+7) | | n^2-n=1482 | | 1/x=1/1.5+1/2 | | 12+4n=4(n+30 | | x+(3x+10)=90 | | w^2+10w-336=0 | | x∘+(3x+10)∘=90∘ | | 6=1-4x+3x |