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)
5/2 = 2*x^2 // - 2*x^2
5/2-(2*x^2) = 0
5/2-2*x^2 = 0
-2*x^2 = -5/2 // : -2
x^2 = 5/4
x^2 = 5/4 // ^ 1/2
abs(x) = (5/4)^(1/2)
x = (5/4)^(1/2) or x = -(5/4)^(1/2)
x in { (5/4)^(1/2), -(5/4)^(1/2) }
| 2w(-6w)= | | 0=56+15t+3t^2 | | 9-10x-7-4x=4 | | 6x-y-1= | | 17-8x=47 | | 18x-4=10x-28 | | 2x+1+y=9 | | -2x-3y=-16 | | 2/6=15/n | | 1/7x−2=1, | | 7/28=9/36 | | 9u-3=8u-8 | | 2x^4/5-49x^2/10 | | (9x+1)+(7x+3)= | | 6=2d | | 9c-5-(c+7)= | | -2(x+4)+58=21+21 | | t^4+7t^2-30= | | 62=2(2x-2)+2x | | 15=5t-5 | | 4w^3-500= | | 7x+3.9=63.4 | | 6(x-4)7=-5 | | 9x-6=-3x+8 | | 2y+y-6=0 | | 49-14b+b^2= | | 3(3y-3)=28 | | 4x+18-3x=-19 | | x=3cosy | | 0.1(x+80)+0.5x=17 | | 4(8x)+40= | | 4(8x+40)=128 |