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 = 0
x = 0
x in (-oo:0) U (0:+oo)
4 = 3*x-(14/x) // - 3*x-(14/x)
14/x-(3*x)+4 = 0
14/x-3*x+4 = 0
14*x^-1-3*x^1+4*x^0 = 0
(4*x^1-3*x^2+14*x^0)/(x^1) = 0 // * x^2
x^1*(4*x^1-3*x^2+14*x^0) = 0
x^1
4*x-3*x^2+14 = 0
4*x-3*x^2+14 = 0
DELTA = 4^2-(-3*4*14)
DELTA = 184
DELTA > 0
x = (184^(1/2)-4)/(-3*2) or x = (-184^(1/2)-4)/(-3*2)
x = (2*46^(1/2)-4)/(-6) or x = (-2*46^(1/2)-4)/(-6)
x in { (2*46^(1/2)-4)/(-6), (-2*46^(1/2)-4)/(-6)}
x in { (2*46^(1/2)-4)/(-6), (-2*46^(1/2)-4)/(-6) }
| 7j^2=63 | | 8(x-2)=6(2x-4) | | -9=2x-y | | 100d^2-36=0 | | (5x+7w-4)(2x-3)= | | n^2+39=88 | | -7x+4y+9-2y-4x=-7-5(-x-5y) | | 4f^2=81 | | 8k^2-5=67 | | 5+0.25=20+0.05x | | s^2+57=0 | | 5+0.25=20x+0.05 | | 4(d+6)=56 | | X=.2x+665 | | h^2-58=-58 | | 5x+0.25=20+0.05 | | w^2=75 | | 5+0.25x=20+0.05 | | p^2=-22 | | 5x+0.25=20+0.05x | | 5+0.25x=20x+0.05 | | t^2-92=-13 | | 5+0.25x=20+0.05x | | 12=75(1.3)x | | m^2-77=44 | | -6(x-2)-3(5x-7)=3(2x+5)+11 | | 92+16b=12 | | -32+(-89)=w | | 3x+12-4x=10 | | k=-125+79 | | 3/16x-5/4x | | ln(x-3)+ln(5)=ln(14) |