If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
2*x-8 = 0
x^2-(9*x)+20 = 0
2*x-8 = 0
2*x-8 = 0
2*x-8 = 0 // + 8
2*x = 8 // : 2
x = 8/2
x = 4
x^2-(9*x)+20 = 0
x^2-(9*x)+20 = 0
x^2-9*x+20 = 0
x^2-9*x+20 = 0
DELTA = (-9)^2-(1*4*20)
DELTA = 1
DELTA > 0
x = (1^(1/2)+9)/(1*2) or x = (9-1^(1/2))/(1*2)
x = 5 or x = 4
x in (-oo:4) U (4:5) U (5:+oo)
(3*x)/(x^2-(9*x)+20)-(5/(2*x-8)) = 0
(3*x)/(x^2-9*x+20)-5*(2*x-8)^-1 = 0
(3*x)/(x^2-9*x+20)-5/(2*x-8) = 0
x^2-9*x+20 = 0
x^2-9*x+20 = 0
x^2-9*x+20 = 0
DELTA = (-9)^2-(1*4*20)
DELTA = 1
DELTA > 0
x = (1^(1/2)+9)/(1*2) or x = (9-1^(1/2))/(1*2)
x = 5 or x = 4
(x-4)*(x-5) = 0
(3*x)/((x-4)*(x-5))-5/(2*x-8) = 0
(3*x*(2*x-8))/((x-4)*(x-5)*(2*x-8))+(-5*(x-4)*(x-5))/((x-4)*(x-5)*(2*x-8)) = 0
3*x*(2*x-8)-5*(x-4)*(x-5) = 0
x^2+21*x-100 = 0
x^2+21*x-100 = 0
x^2+21*x-100 = 0
DELTA = 21^2-(-100*1*4)
DELTA = 841
DELTA > 0
x = (841^(1/2)-21)/(1*2) or x = (-841^(1/2)-21)/(1*2)
x = 4 or x = -25
(x+25)*(x-4) = 0
((x+25)*(x-4))/((x-4)*(x-5)*(2*x-8)) = 0
((x+25)*(x-4))/((x-4)*(x-5)*(2*x-8)) = 0 // * (x-4)*(x-5)*(2*x-8)
(x+25)*(x-4) = 0
( x+25 )
x+25 = 0 // - 25
x = -25
( x-4 )
x-4 = 0 // + 4
x = 4
x in { 4}
x = -25
| 60=-4x+5(-3-7) | | 1014+211y=2315 | | 906y+715=2714 | | 7=2x-4 | | A^2+10A-9=0 | | p^6q^5/p^4q^3 | | 25y+6=186 | | -5x+4/3=5/3 | | p^3q^5/p^2q^2 | | 942+13y=1442 | | 6(x+5)=-6 | | 27y+92=610 | | 4a+2=2 | | 16=w-3w-12 | | -15+r=28 | | 85y-6=-904 | | -2+0.4y=-2+0.4y | | -(r-7)=-3(8r+8)-8r | | x-5x+5=-23 | | 5(y+4)-3(2y-2)=26 | | -(r-7)=-3(8x+8)-8r | | 5(x)-6=14 | | 4y+3y=6y-2 | | 1-5y+2y=-8 | | 14/(2x+1)=56/(x-4) | | -16g-20g+(-7g)-(-2g)=19 | | 7t-t-8=5t-6 | | 8x+19+21x-13=180 | | 8m+3=-5 | | 10x+1+4x+11=180 | | 7x+25+17x-13=180 | | 4+(x)+5=7 |