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 = 0
x-4 = 0
x = 0
x = 0
x-4 = 0
x-4 = 0
x-4 = 0 // + 4
x = 4
x in (-oo:0) U (0:4) U (4:+oo)
360/(x-4) = 360/x-3 // - 360/x-3
360/(x-4)-(360/x)+3 = 0
360/(x-4)-360*x^-1+3 = 0
360/(x-4)-360/x+3 = 0
(360*x)/(x*(x-4))+(-360*(x-4))/(x*(x-4))+(3*x*(x-4))/(x*(x-4)) = 0
3*x*(x-4)-360*(x-4)+360*x = 0
3*x^2-12*x+1440 = 0
3*x^2-12*x+1440 = 0
3*(x^2-4*x+480) = 0
x^2-4*x+480 = 0
DELTA = (-4)^2-(1*4*480)
DELTA = -1904
DELTA < 0
3 = 0
3/(x*(x-4)) = 0
3/(x*(x-4)) = 0 // * x*(x-4)
3 = 0
3 = 0
x belongs to the empty set
x belongs to the empty set
| x-0.05x=160000 | | x/0.05x=160000 | | 8(5-c)-2(c-6)= | | .62*x=7500000 | | 8a-7=5a-4+7 | | 0.25x+0.15y=19 | | 0.25x+0.15x=19 | | B+a=90 | | 5x^2-7x+2.2=0 | | 6y+5=4y+3 | | 0.257-0.4=0.15y+2-0.5y | | 5m-28=-38+7m | | 3+5q=95 | | 3y-15=19 | | 6y+5=4y-3 | | 12a+18=4a-14-18 | | t^2-18t+729=0 | | 18x+10=66 | | 10a^5*4A^3/8a^-2 | | 3sinx^2=2+2cosx | | 4xy+5x= | | 7s-16=68 | | (9x-5)^(3/2) | | 6x-25=3x+44 | | x^2+90x-2025=0 | | 6x-14-4x=12x+8-6x+10 | | 10*5=15 | | 20p+20q+p-4q-3q= | | 7x/x=6 | | 7x3/x=6 | | 100=x+2x | | 10y=12m |