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)
(1/4)*x^2-1 = 0
1/4*x^2 = 1 // : 1/4
x^2 = 4
x^2 = 4 // ^ 1/2
abs(x) = 2
x = 2 or x = -2
x in { 2, -2 }
| 1/5×12 | | 2x(-8+3x)=3x(2x-4) | | f(x)=10x-3 | | 2(x+5)+8=10 | | 18x-(2x-3)=35 | | x^2+7x-58=0 | | sin(7x)-sin(6x)=0 | | a=-144/-11 | | 4n-28-12= | | m^2+7m-40=0 | | 3z+2=x+15 | | 4n-28= | | 13x+11=3x-169 | | y=3*0-6 | | 3x+14-2x=7+4x-5 | | 3x+15=x-13 | | -c/10-5=13 | | 4x+26y=9 | | -(x+2000)*0.32=320 | | 3*0-6= | | g/10=5 | | 5+78x=52x+15 | | w/-2=15 | | 2x+9=-x+4 | | 4x^2+58=3902 | | a^2/5a | | 5-3[-6(5-4)-5(5-4)]= | | 3x-8x+12=4x+30 | | 4x=10x+3 | | In(3x-8)=5 | | 2(7-x)+7x=8-5(x-1)+8x+4 | | 3x^2+49=3121 |