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)
(22.2*64*(60/x)^20)/10 = 0
51946699116414763008000000000000000000*x^-20 = 0 // : 51946699116414763008000000000000000000
x^-20 = 0
x naleu017Cy do O
x belongs to the empty set
| 5x=8.75 | | n/1.5=4.2 | | X/4+3/5=7 | | y-4.5=8.5 | | 4=12x | | k/3+4=8 | | m+11=5m-9 | | .07-.01x-.03=-.02+.02x | | 9(x+9)=5[x-(9-x)] | | 7x-27=-14 | | -1/3=6 | | 2(x-4)-4(x-2)=x+3-(x-5) | | 8y-5=16y+67 | | 5x-3=2+4x | | 2z-1=x+2 | | x^3+x^2-144=0 | | 4x-8=8x+32 | | 6x^2+6x+5=32 | | 10n+10=45n+15 | | 2x-10-9x-18=-48 | | (4u-5v)(5u-7v+6)=0 | | 4x^2+13x-5=0 | | 8p+7-5p+6= | | 72=3x+5+4x+4 | | (x-4)/3-(2x+1)/7=(5x-1)/2 | | 2m-4=3m-9 | | f(x)=-4x^2+7x+2 | | x-5y-2=0 | | 78=24x-3-7x+4 | | 5x+1=5x+40 | | 12/48 | | 2=c/-8 |