If it's not what You are looking for type in the equation solver your own equation and let us solve it.
1-(4/(x^2))
12/4 = 21/7
(3/7)*(2/4)
2*x^4+5*x^2-2;2*x^3-x-1
2*x^4+5*x^2-2;2*x^3-x-2
| 9b-6=30 | | 256.7/10= | | 23=k-3 | | b-4+2b= | | 67y=9/10 | | .7x-1.8=3.2x+1.9 | | A+4A=15 | | x^2+y^2+18x-8y+47=0 | | 7.2x=1.8 | | 6b+6b+2a= | | 10x+20=260 | | 7x+5-2(-2x-3)=3(x-1) | | 4n+3=2n+19 | | Χ^(1/2)=10 | | 4/x=0.15 | | 4x+4x=75+25 | | 12/4=21/7 | | -0.04y+14=-12.4 | | -8+7(1-3m)= | | 2(3-a)=41.1 | | s*5+40=110 | | (3d)(3e)= | | 4yi=-4i | | 3a-42=(a+4) | | -4y=12x-8 | | 555x=65 | | -2x+-2y=-10 | | (3x-2)+5(x-2)=(6x-1)(6-1)-1 | | -17=0.33333333(9y+12) | | 4m-4=24 | | 150h+72=240h+54 | | 3*2+y=0 |