If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
((4*n)/2)*n = 0
2*n^2 = 0 // : 2
n^2 = 0
n = 0
n = 0
| -6*(6x-2)+2*(2x-5)=4x+5 | | 2x+11=(x+7) | | 0.5x=19.5 | | 0.6x=13.02 | | 2x=-21-(12+x) | | 6x^2+17-28=0 | | 6x+30=4x | | 12.4=0.41x | | 92+(-4)=120 | | 51+[83-(39*2)]= | | 92q-(-4)=120 | | -36x+4x-4x=5-10+12 | | -35x+4x-4x=5-10+12 | | 1200p*24=500 | | log[4](1.8)= | | 1200p+58=500 | | x^2-2ab+2bx^2-a=0 | | 0.3Q^2-4Q-40=0 | | 1x-4yi=4 | | 10-(x+2)=-4 | | 154=256+154 | | 10c-3=37 | | 80=256+80 | | 2x=3+4y | | -5q-4=15 | | 4sin^2*x+1=0 | | 40=256+40 | | Q^2-4Q-40=0 | | 25x^2+20x-21=0 | | 70x-4=0 | | 5x(5x+4)=0 | | 6x^2-12-18x=0 |