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)
(4/3)*x^2-192 = 0
4/3*x^2 = 192 // : 4/3
x^2 = 144
x^2 = 144 // ^ 1/2
abs(x) = 12
x = 12 or x = -12
x in { 12, -12 }
| 8=-5+h | | (2n-4)(n+6)=936 | | 8=8x-16 | | 4(3x+3)=58 | | .25(x+2)-.15(x+3)=4 | | 6x-1=3x-13 | | 6a^2-3.6=0 | | 9=11sin(4x) | | a^2x+(a-1)=(a+a)x | | 4e^3*x+3=19 | | 3+4e^3x=19 | | y=Ix+3I+4 | | C=(x+1)*(x+1) | | 4(4x-4)=80 | | h-55=385h | | 4e^3x+3=19 | | -3x-2y=7 | | 2X^3-4y+7XY= | | t=54-2m | | x-0.10x=17.10 | | X^2-68X+46=0 | | 4(2x+1)=3(2x-5)+39 | | 6x+78=37+11x | | (5x+3)+(8x-5)=12 | | 6x+78=37-11x | | 6x-3x+3x= | | 6x+78=57-11x | | 9w=6210 | | 2sinx+cosx=0 | | 1.2w+3.5=2.1+w | | (x-5)(-2x+6)=0 | | 2(4x+1)=2*4x+2.1 |