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/x-3 = x // - x
4/x-x-3 = 0
4*x^-1-1*x^1-3*x^0 = 0
(4*x^0-1*x^2-3*x^1)/(x^1) = 0 // * x^2
x^1*(4*x^0-1*x^2-3*x^1) = 0
x^1
4-x^2-3*x = 0
4-x^2-3*x = 0
DELTA = (-3)^2-(-1*4*4)
DELTA = 25
DELTA > 0
x = (25^(1/2)+3)/(-1*2) or x = (3-25^(1/2))/(-1*2)
x = -4 or x = 1
x in { -4, 1}
x in { -4, 1 }
| 1.10w-19.95=-2.35 | | x-(y+3)=7 | | 4/7=42/x | | 3x-30=5x | | 8/19=x/570 | | 5.6-.32s=1.12 | | 4t^2+25=20t | | 0.03(4t+5)=0.12(t-5)+0.75 | | (3w^2-5w+4)-(-w^2+2w+6)= | | 1/2x-4=-1+2x | | 12-3d=0 | | 12(t-4)+3t=5(3t+4)-12 | | -15+2b=25 | | .2x-.25x+6=.3x | | 5(2n+1)=8(8n+5)+1 | | 8-2x-x^2=0 | | (1/4)x^2-3/8=4/5 | | x+y=5+y | | 7x-4=22 | | x+y=10-2y | | 500=x-.25x-50 | | -6x^2+7x+3=0 | | (x+-8y)(x+-8y)=0 | | 1/7+3x | | -7+-12= | | 4e^9x=24 | | 10+4r=50 | | 8x-6=8(x+3) | | 1.3x^2-11x-100=0 | | x^4+(1/4x^4) | | 2e^7x=8 | | (8-7i)+(-9-i)= |