If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x^2-1 = 0
x^2-1 = 0
x^2-1 = 0
1*x^2 = 1 // : 1
x^2 = 1
x^2 = 1 // ^ 1/2
abs(x) = 1
x = 1 or x = -1
x in (-oo:-1) U (-1:1) U (1:+oo)
((4*x^2-(8*x)+4)/(x^2-1))*(x^2+3*x-4) = 0
((4*x^2-8*x+4)/(x^2-1))*(x^2+3*x-4) = 0
((4*x^2-8*x+4)*(x^2+3*x-4))/(x^2-1) = 0
4*x^2-8*x+4 = 0
4*(x^2-2*x+1) = 0
x^2-2*x+1 = 0
DELTA = (-2)^2-(1*1*4)
DELTA = 0
x = 2/(1*2)
x = 1 or x = 1
4*(x-1)^2 = 0
x^2+3*x-4 = 0
x^2+3*x-4 = 0
DELTA = 3^2-(-4*1*4)
DELTA = 25
DELTA > 0
x = (25^(1/2)-3)/(1*2) or x = (-25^(1/2)-3)/(1*2)
x = 1 or x = -4
(x+4)*(x-1) = 0
(4*(x-1)^3*(x+4))/(x^2-1) = 0
( x+4 )
x+4 = 0 // - 4
x = -4
( x-1 )
x-1 = 0 // + 1
x = 1
x in { 1}
x = -4
| (x+2.2)-(0.2x+4)=11 | | 5x+18-8x=3 | | -46b+b^3+10b=0 | | 2x+3y+2x+y+4x+6y=180 | | (x-5)/(x^2-3x-10) | | 6(n-1)+2=n(4+2)+4 | | 3x^2+6x=15 | | 4x+6=7x+15 | | 8+3m=21+2m | | (x-5)/(x^2-7x+10)=0 | | s(t)=-16t^2-64t | | 3+3x-x=7+x-x | | -40b+b^3+4b=0 | | 16x-72=12(x-4)+17 | | .25(8+4s)-.5(6+2s)= | | (x+1.8)-(0.1x+7)=10 | | y=-1.66+-0.5x | | 3n-24=3n | | X^2+x-22= | | 9(a-14)+2(a+46)=a+1 | | 6-2(3z-1)=2 | | -23b+b^3+7b=0 | | x^2=x-22 | | .25(12+4s)-.5(12+2s)= | | 3f+7=f-15 | | -5x-100=-15x | | 5x+9=-39 | | 1.5x-1.2x-3=0.5x-5 | | x-1/x-3=x+6/x-1+1 | | -x+1=-5+2x | | 0.51+0.26t=1.20t-0.90 | | 5x-6y=5 |