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)
(X^2)/10+5/2 = x // - x
(X^2)/10-x+5/2 = 0
1/10*X^2-x+5/2 = 0 // - 1/10*X^2+5/2
-x = -(1/10*X^2+5/2) // * -1
x = 1/10*X^2+5/2
x = 1/10*X^2+5/2
| 2x+1/8=x-3/8 | | 3w+1=2(3.5)+1 | | 128=0 | | (x+1)(x+3)=48 | | X/5-7 | | 4x+20=188 | | 6x+35+9x=15(x+4)-15 | | 839x-462=635x+445 | | 20+0.15m=30+0.1m | | 3(x-2)-5=-5(x-4) | | x(7x+1)=30 | | 2x+27=133 | | zx^2-20=0 | | 11x^2=7x+10 | | x^2-3xy+2xy-6y^2=0 | | 2-6x^2=3x | | 3(x-1)-8=6x-3(4+x) | | 24r^4s^7-6r^2s^3+12r^3s^4=0 | | 1993x+3991=9319x-9913 | | 6x^2+5xy+y^2= | | 9x+1=7x-13 | | 10-2(m-5)+10m=20+4(m-6) | | X/2-3=3x/5+1 | | 5w-16=74 | | -4/3(y-12)-1/6y | | 3y+4x=27 | | 3.50(225-150x)=2000 | | .83x-8=.16x+10 | | 0.0004y^4+0.08y^3+5.28y^2+53y=0 | | 3.50(150-225x)=2000 | | 7(c-5)+8=3+c-30 | | 3.50(150+225x)=2000 |