If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
y*((X-y)/2)-(2*x) = 0
y*((X-y)/2)-2*x = 0
(y*(X-y))/2-2*x = 0
(y*(X-y))/2+(-2*2*x)/2 = 0
y*(X-y)-2*2*x = 0
X*y-4*x-y^2 = 0
(X*y-4*x-y^2)/2 = 0
(X*y-4*x-y^2)/2 = 0 // * 2
X*y-4*x-y^2 = 0
X*y-4*x-y^2 = 0 // - X*y-y^2
-4*x = -(X*y-y^2) // : -4
x = (-(X*y-y^2))/(-4)
x = (y^2-(X*y))/(-4)
x = (y^2-(X*y))/(-4)
| 10x=21+3x | | 7=5/u-7 | | 294-6/x | | V^2=-10v-16 | | 6x^3-13x^2-79x+140=0 | | (2x+4y-3z)-(3x-9y+10z)=0 | | x^2-3x+m+2=0 | | -36+2w=-8w+2 | | -7-5n=63 | | 6p^2=14-3P | | x-6=294 | | y-4.79=1.36 | | 14x+20+22x-12=180 | | 0.09xX=95.60 | | x+(x-11)=35 | | y-4.79=1.39 | | 13x-130=11x | | h(t)=800t-4.9t^2 | | 4[6+4(3+2)+3]= | | u+6.9=8.77 | | 14x+3=-6+23 | | v-8.54=6.93 | | 14n^2-18n=140+3n | | (x+3)(5)=(x)(6) | | 40=15x | | 14g=35 | | x+3+5=x+6 | | 1/4*1/4=12/x | | X+(X*0.13)=489.19 | | 5r^2+16-16=0 | | x+3[x-2]+5[1-x]=0 | | 1cm=x |