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)
(1/2)*x^2 = 18 // - 18
(1/2)*x^2-18 = 0
1/2*x^2 = 18 // : 1/2
x^2 = 36
x^2 = 36 // ^ 1/2
abs(x) = 6
x = 6 or x = -6
x in { 6, -6 }
| 5(f-2)=2(3-f) | | A=1/2b*h | | 5(f+20)=2(3-f) | | x/2+3=8 | | 8+3-x=6-5x | | 2/3x^2=12 | | m+4/9=20 | | x/7+16=12 | | 5=7+21g | | 8m^2=96 | | -21+w^2=19 | | 21-10x+9-2x= | | x/4-13=-6 | | 8x^2-11x+10=0 | | 1yd+5yd= | | 3m(-4)+2m=5 | | 2v-54=-v | | 1(6-10)= | | x(6-10)= | | 4x-6y=-4 | | 6(1)-3y=-3 | | 2.5+4.3x=3.1x-1.5 | | x^2-56+x=0 | | x^2-56-x=0 | | 2x-g= | | -24+5x=8(8x-3) | | 5m^2+10m-80=75 | | 15x-7y=66 | | 2b^2+10b+15=3 | | 6x^2-3x+1=0 | | 3x+7y=38 | | 2a+3-6a=-21 |