If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( n )
n = 0
n = 0
n = 0
n in (-oo:0) U (0:+oo)
36/n = 8/10 // - 8/10
36/n-(8/10) = 0
36/n-4/5 = 0
36*n^-1 = 4/5 // : 36
n^-1 = 1/45
-1 < 0
1/(n^1) = 1/45 // * n^1
1 = 1/45*n^1 // : 1/45
45 = n^1
n = 45
n = 45
| 6x^2+8y^2=96 | | 6b-20-2=92 | | 21f-16f+8=63 | | 6.30f+20=2(0.725f-25) | | B/78=10/12 | | 4/6=22/n | | 4(-5x+30)=12x-45 | | (3x^2+4x-2)+(-7x^2-10x+17)=0 | | -115-2x=12x+109 | | 6(5q-100)=3(3q+15) | | 1.3n=-5.2 | | 7x-20=36+1 | | 0.25(8z-4)=-z+8 | | 5x-49= | | 7n-20=36+1 | | X^-2/5z^0 | | 2y^3-5y^2+6y-1= | | 3.85m-312=200-2m | | 4(n+1)+3(n-4)=n+40 | | 13+1.50x=58.00 | | 7/21=3/c | | 3.85m+312=200-2m | | 36x^2-24x=41 | | 5x^2+3=183 | | 2/10=5/z | | 9p+8=-10 | | 0.325x+10=0.755x+38 | | 5b-2(b-1)= | | 18b/5=360 | | 0.395(0.8)/250=0.789474(x)/500 | | R(p)=-4p^2+800p | | 0.395(0.8)/250 |